MARCH 19, 2013






Tessa Gray should be happy — aren’t all brides happy? Yet as she prepares for her wedding to Jem Carstairs, a net of shadows begins to tighten around the Shadowhunters of the London Institute. A new demon appears, one linked by blood and secrecy to the Magister, the man who plans to use his army of pitiless automatons, the Infernal Devices, to destroy the Shadowhunters. He needs only one last item to complete his plan of destruction.

He needs Tessa.

Tessa knows Axel Mortmain, the Magister, is coming for her, but not where or when he will strike. Charlotte Branwell, the head of the London Institute, is desperate to find Mortmain first. And the boys who lay equal claim to Tessa’s heart, Jem and Will, will do anything to save her. For though Tessa and Jem are now engaged, and Will knows he should force himself to find someone else to care for, he is as much in love with her as ever.

In the last words of a dying Shadowhunter reside the clue that might lead Tessa and her friends to Mortmain. But the Shadowhunters of the London Institute cannot stand alone, and in their homeland of Idris, the ruling body of the Clave doubt their claims that Mortmain is coming. Deserted by those who should be their allies and with their enemies closing in, the Shadowhunters find themselves trapped when Mortmain seizes the medicine which is all that is keeping Jem alive. With his best friend at death’s door it is up to Will to risk everything to save the woman they both love.

To buy Will time, the warlock Magnus Bane joins with Henry Branwell to create a device that could help them to defeat the Magister. As those who love Tessa work to save her, and the future of the Shadowhunters that resides with her, Tessa realizes that the only person who can save her is herself —for in the discovery of her own true nature, Tessa begins to learn that she is more powerful than she ever dreamed possible. But can a single girl, even one who can command the power of angels, face down an entire army?

Danger and betrayal, secrets and enchantment, and the tangled threads of love and loss intertwine as the Shadowhunters are pushed to the very brink of destruction in the breathtaking conclusion to the Infernal Devices trilogy.


“Princess is laced with nods to The Mortal Instruments, providing answers to questions you didn’t even know you had (as well as fodder for endless message-board arguments). Fans will appreciate Clare’s attention to detail, for it’s the details that make Princess so compelling and believable, clockwork automatons and all. And it won’t matter whether you’re Team Will or Team Jem. Princess offers a payoff so satisfying that, by the Angel, it may be Clare’s best undertaking to date.”

-Entertainment Weekly

“Clockwork Princess was all I was hoping for and more. There was so much hype and anticipation leading up to the final installment of The Infernal Devices, and I can say with complete and utter confidence that it did not disappoint. It far exceeded  my expectations as all of Cassandra Clare’s books tend to do.

I believe Clare has outdone herself with Clockwork Princess. It’s easily my favorite book of hers and provided everything a fan of this series would like to experience, even things they didn’t know they’d want to experience.”

-Alyssa Barbieri,


  • A #1 New York Times bestseller
  • A #1 Publisher’s Weekly bestseller
  • A #1 Wall Street Journal bestseller
  • USA Today bestseller

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92 thoughts on “

      • OMG!!!!!!!!!!!
        it probably might but it wont!!!!!
        you have to read it
        1 word
        (or you could say 1 name)

    • Can’t wait for 3/19! Going straight to book store after school!! Holy Mother of Monkey Milk it’s almost here! The anticipation is killing me! I WANT WILL AND TESS!!

  1. I’m kind of scared that this book will rip me into pieces from its sadness….that’s what happened in CP…..gosh can’t this book come out faster?!?!?!?!?!?! Im so impatient! I wanna know who she ends up with…I loveeee Will but I feel bad for Jem :( I want her with Will but that most likely won’t work out….but then who would be the mother of Will’s child to have the Herondale name live on?!?! I can’t see anyone but Tessa….Maybe she just ends up with no one. But that would be pretty heartbreaking as well…..UGGH 2013 COME FASTER

  2. I wish this book would hurry up and make it to the shelves already! I Want to see what happends w/Tessa and her love triangle. I want her to end up w/Will, but I know she wont. It wouldn’t be fair to break Jem’s heart like that. I’m thinking since Jem’s life is going to be short lived maybe she marry’s him. And when he dies Will steps in and Marrys Tessa. And later they have there own kids and thats how the Herondale love story goes. Possibly??? Or Tessa ends up w/Will and Will’s sister w/Jem Idk.

      • That’s not true no one knows what species tessa is because she bears no warlocks mark she could be her own type of species marry will and have kids and they would be shadow hunters because shadow hunters are completely dominant

      • Tessa actually appears at the end of City of Glass talking to Magnus as her seventeen year old self so there is no way she could have married either of them and had children.

    • lol! yes that is terrible but agree. hes going to die anyway why not faster? i am a terrible person! Lol!!!!! I just wish she would pick will even if jem did not die he is to damn sexy to be a second choice. :)

    • I think it would make a tragic ending but a really good one! It isn’t that i don’t like Jem but I think it would take the book in a whole new direction and would be a really good ending for the trilogy! If it happens though I will cry! :(:)

  3. Die Jem let Will and Tessa be together! Oh My God just die from your sickness already you ignorant selfish bum!

    • that’s really mean t all the Jessa shippers like myself. its not like im sitting here say Will can go die in a hole cus he don’t deserve to live it I thought that ( which I don’t i love will herondale) I would keep such vivid opinion’s to myself. U really need to learn to hod back and think of others.
      I love u Will Herondale and I l,ove u Jem Carstairs

  4. Wwwwwwiiiiillllllllllllllll!!!!!!!!! Oh, why all the love triangles! Everybody is like: “It’s going to be Jem they are already engaged” but Cassandra Clare go with the less obvious solution PLEASE! Will, has a brave strong heart, and has WAY more in common with Tessa! They are a better couple! I don’t even know WHY Jem likes Tessa! They have nothing in common!

    • This series reminds me of A Series called the Tiger’s Curse (love triangle). IF you love these books you will love them, they are by colleen houck. But i totally agree Wwwwwwwwiiiiiiiiillllllllll!

    • Are you kidding me? Love triangles almost ALWAYS end up with the male lead, or the bad-ass guy, and the poor second lead who loves the girl just as much has to deal with unrequited love. This is one of the reasons that I love ID! It’s one of the few romances that has an unpredictable ending!
      I’m so tired of people wanting Jem to die! (But I have the worst suspicion that he will….) Both Will AND Jem have “a brave strong heart.” Will is just more popular because of his sarcastic, sexy, angst ridden life story which attracts fangirls like moths to a flame. Jem is hot too! It’s not a bad thing that he’s more quiet, gentle, and self contained! (Though I wouldn’t say “self-contained” is the best way to describe a certain scene in clockwork prince…cough, cough :P)
      And who says that commonality has to be the foundation to romance?? Jem LOVES Tessa! She’s the only girl that makes him laugh! That makes him feel HAPPY! Why are there any doubts about that? And who cares that they don’t have much in common?

      • well Cassie already had the male lead get the girl in TMI, Clary picking Jace over Simon, so hopefully she will change it for TID

  5. Another thought. The Lightwood’s hate Will because he apparently was with the sister. What if she got pregnant and had Will’s child, therefore causing Will’s genes to be passed down throughout the Lightwood’s line. Tell me what you guys think

    • That makes a lot of sense, actually. They have blond hair, which would give the child at least one of those genes, and then going down…. BUT THAT IS NOT WHAT WE WANT. UGHLAJDSL;FJS;DFJK

    • It can’t because of the mortal instruments series since there are the Herondales and the Lightwoods and they are two different families

    • I don’t want to even think about that! HOW CAN ANYONE??!! I will say this now and not for the last time! WILL LOVES TESS & TESS LOVES WILL ; ANYTHING ELSE IS UNTHINKABLE! ( Remind you of a certian book named ‘TMI’?… I asumed so ;) )

  6. I think that something really bad happens in this book to both Jem and Tessa….. I want Will and tessa to end up together because Will has finally figured out he CAN love and be loved because the curse wasn’t real… but anyways, if you’ve read The Mortal Instruments you know that there’s a Silent brother in the book named Brother Zachariah and he is especially concerned with the health of jace and him carrying on the Herondale name and he seems to be the most “human” of the Silent Brothers. In The book Clary asks him if he still remembers being human and if he had ever loved anyone and replied that he had loved two people. Here’s the exact quote from the book (city of lost souls) “Two people, said Brother Zachariah. There are memories that time does not erase Clarrisa. Ask your friend Magnus Bane, If you do not believe me. Forever does not make loss forgettable, only bearable.” So by pointing this out….. I think in the end Tessa and Jem both die, leaving Will heartbroken and he becomes a silent brother….. Brother Zacharia to be exact! And I think that’s why he seems to be more Human than other Silent Brothers and why he seems to keep quiet about some things that the Lightwoods and Clary do so he can possibly keep Jace safe. We’ll just have to see what happens….. But, im super excited! (:

    • I agree with you on most of the things you said. But i think that Jem is Brother Zachariah. Cause since he is so worried about Jace (casue he’s a Herondale) and also i think that he is Jem cause we know that Jem loves Will AND Tessa. So them two could be the two people he is talking about. But i think you make a good point. But if you remember from City of Glass, Tessa is mention (not exactly but assumed). So she doesn’t die after all.

      • pg 478 – the supposed Tessa is described as ‘a girl in a white dress with a cloud of brown hair’. Clary says that ‘ther was something familiar about her’.

    • OMG OMG OMG OMG OMG OMMMMGGGG!!!! I think you are totally right with Will being a Silent Brother Zachariah and everything! OMG WILL HERONDALE IS A SILENT BROTHER!!!!!!!! *HUGE GASP*

    • Well it can’t be both Jace being a direct descendant of Will and Will being Brother Zachariah because Zachariah also said he never had any kids

      • well every other person hates jem they want him to die he`s already dieing on the inside i mean realy people give the poor guy a break he`s lost everything

    • Not every other person wants Jem to die! The majority of Twill shippers recognize that to separate Jem from Will would be just as harmful, if not worse, then separating Will from Tessa.
      Will and Jem are both dying (though Will is *just* dying emotionally, he’s still dying in a sense). I’m just anxious that their friendship will remain intact. :)

      • @Sofia
        You’re so on it! Smash it girl! I mean in all honesty, Twill shippers love Jem and we Love Tess and we Love Will but we don’t love Tess and Jem together… Get it?
        Jem and Tess = NO GO!
        Will and Tess = LOVE 4EVER!!

  7. I have pretty much given up on any happiness coming from anywhere in this book. The only possible happy outcome would be if the Angel magically merged Will and Jem into one person, but that’s way to farfetched (or is it…)
    I’ve also given up on trying to choose between Will and Jem. There’s no way either one can end up with Tessa that wouldn’t destroy their friendship, which is the most beautiful friendship I have ever read about. So maybe for me, the least painful option would be for Tessa to end up alone.
    And by ‘least painfull’ I mean sobbing into my pillow and being emotionally traumatized for a year.

  8. Homeschooled girl I feel for you! And I totally agree with on Will and Jem’s friendship. Personally I think that Will and Jem’s friendship is better than Jace and Alec’s friendship. But that’s just my opinion.

  9. Yeah! That make’s a lot of sense too! And in CoG when they “hint” about tessa it’s because she’s immortal…. because she’s some kind of warloc! And if you think about it if she’s immortal then it would make sense that Will would want to be a silent brother so he never has to leave her in this world. But… you know it could be jem because he loves her too! Arg, I just don’t know :/!

  10. I think that Tessa Will end up with Jem. There are Herondales and there also Carstairs!!! And in CA it says that they are the only males left with the surnames of Herondale and Carstairs. It very confusing!!!!!
    But the silent brother would have to be Will because he was friends with Magnus more than Jem was and in CoLS Brother Zachariah says that “If you don’t believe me, ask Magnus Bane”. According to my research with the snippets and adding them all together, Tessa is going to be Jem. And Will’s sister Cecily will be with Gaberial Lightwood. But Will may be with Jessamine because Jace is a Herondale and has blond hair and Jessamine has blond hair. But maybe Will will become a Silent Brother…
    It’s so confusing!!!!!!!!!!!
    Let 2013 come quickly!!!
    And by the way, I’m Team Jem!!!!

    • i`m with u JH thats a pretty good explaination but the silent brother could still be Jem it could be the only way Jem and Tessa could be together ! and i`m team Jem too !!!!!!!!!!!

    • hi but what u guy are failing to notice is that Jace might have blond hair for another BIG reason…..his angel blood. because if Will gets with Jessie that explains the gold hair but not the gold eyes. and Will might not live because if he dies there is still his sister who can carry on the family name.
      and i dont think jem has ever heard of magnus so yeah…
      and i do wish you lot would be nicer to jem

  11. Jem won’t die BECAUSE it would too predictable. He’s sick and already dying, and if you recall, the summary for CP2 as well as the snippets, all say that his health declines. This is likely meant to lead you to believe he dies.

    I have been seeing a lot of Will supporters with the argument that ‘the curse ruined his life, so Tessa should be with him.’ But, you are NOT Tessa, so you don’t see. Her time period also comes into play. Will basically called her a whore and suggested a purely sexual relationship and the fact that she forgave him is amazing. That was a MAJOR off fence back then– and still is! Jem did it properly and never pushed or hurt her, so it makes sense she’d choose him

    Another thing. Jem and Tessa DO share common interests. Ex. Stubborn and strong. I will not go on because I don’t want to offend anyone.

    Finally, hating on Jem is ridiculas. It’s no one but Wills fault that Tessa is no longer trusting of him.

    Adieu mon amis

  12. Why is everybody going on and on about haircolors and eyecolors? I mean those genes can come in way later. The infernal divices happens in 1800 sometime and The mortal instruments happens now. So i don`t think Jace is blond because of Jessamine.

  13. Everybody who read Clockwork Prince can see that she loves Will more. Jem is more like a friend, and she don`t want to hurt him. She even loved Will more when he treated her badly. Before she even knew why.

  14. i think Jem is going to become Brother Zachariah. i love Jem to death, but i don’t want him to be with Tessa if she’s only with him so she wont hurt his feeling!

  15. Team Will all the way
    She does not ‘love’ Jem- she was attracted to him in the moment
    But she truly LOVES Will, remember when Jem proposed to Tessa and Will found out everthing and stuff. She had then burnt her hand or something and when Sophie came to meet her she asked her if she didn’t break Jem’s heart- She replied not BUT what was her reply in her HEAD: ” No, I didn’t but I BROKE MINE INTO TWO”
    She loves Will- but is trying to convice herself to love Jem.
    Tessa and Will are the people who actually love each other…
    Don’t you think?

    • Actually, I took that to mean that her heart was being split in half…

      As in, she has been– /unintentionally/– put in a position where she must chose between them.

      As in, her heart is being split in half by love– half for William, half for Jem.

      Note: I’m neither team Jem nor team Will :P I was just throwing this out there.

  16. I want her to end up with will so badly. It’s so sad how he finally got his hopes up and told tessa he loves her and his heart was broken. I don’t think she even loves jem, she just doesn’t want to hurt him. I am like a nervous wreck not being able to read clockwork princess. Hurry up and put the book in stores!!!

  17. im sooo excited for the clockwork princess to come out!!!!!!!! :D i hope that Jem ends up with Cecily or frankly ANYONE except Tessa cause i want her to end up with WIll :) sooo bad…… and also the dark artifices main characters name is Emma Carstairs sooo Jem has to have kids with someone (hopefully not tessa). im sooooooooo confused D:

  18. I AM SOOOOOOO SUPER EXCITED FOR CLOCKWORK PRINCESS THAT I AM LITERALLY SPEECHLESS. I cant believe its the end of the series… :( its so sad but i know it will be great! we also have the dark artifices so stay tuned guys!!! I love Jem but lets face it, Tessa and Will BELONG together!!! we all know that :) Hope 4 the best!

  19. So, guys, in relation to deaths…

    I have become 99% sure that Will /cannot/ die. Wanna know why?

    Magnus’s Vow.

    In it, he is looking at a picture of our TID Shadowhunters, and when he reaches William he thinks ‘he was still beautiful and young’.

    As in, he becomes not young.


    Now, at first I thought that this meant that Jem cannot either. Until I realized… /Will isn’t cursed/. That is why James was /so/ important to him, because Jem was all he had, all he /could/ have. And that is why Will would die without him, because without James, there is no light or hope for Will.

    But now there is. Of course he still loves James, of course he would still do anything for him, but he is no longer completely and utterly dependent upon him.

    That realization left me as hopeless as Will was before Jem D’:

  20. i think that Jem could possibly get killed off from the drug and even though Will says he can’t love Tessa if that happens he will still end up with her or Jem finds out how Will feels and kindly gives him the chance to love Tessa and marry her instead but Tessa’s heart is so confused that it doesn’t know what it wants right now


  22. Surely the fact that Tessa is a possible warlock, means that she cannot have children. And even if she could with Jem or Will, would they be allowed to be shadowhunters because she has demon blood and is not a shadowhunter herself. Also because her children would only be half shadowhunter would they be able to have runes put on them??

    So basically i have come to the conclusion that Tessa either ends up alone, or she chooses Will because: Will has a sister to carry on the Heronadale name, as well possible cousins that we have not heard of because Will ran away from his family when he was younger. Therefore if Will and Tessa got together it would not matter if they had children or not because the Heronadale name could still be passed down. Jem on the other hand is the only Carstairs left, and so has to have children which can be shadowhunters in order for Emma Carstairs in The Dark Artifices to be alive.

    This theory would also link in with the theory that Will becaomes Brother zachariah if Tessa chose neither Jem or Will, but Jem found someone else to be with in order to continue on the Carstairs line.

  23. awwwwh i felt for will so much when he spoke out he was cursed and that he had to push people to hating him to protect them thats when i new i was 100% team will!!! and how tessa explains how she feels and looks at will more than jem you can just tell its will shes loves more!!! ARRGHH i want to know what happens!! not long now though!!:D

  24. I’m pretty sure Will is brother Zachariah… soo depressing! And I mean they live forever knowing each other still exist? Talk about painful. I hope Jem and Cecelia get together anyway….. :( Besides, how can Tessa marry either if the one she marries can control her power like Mortmain would be? Kind of stupid.Team Will! I mean he has sacrificed so much for her, their personnalities are sooooo much closer! Its like they just connect! WHY does it have to end so miserably? I know it will. Just to make us suffer. ;p

  25. when I was at BJ’s the food store i happened to glance at the books and The Infernal Devices:Clockwork Princess was right there! I told my mom it wasn’t supposed to come out till March 19th. She asked if it was the right book and i was YES! It’s the only book out of the series that has a girl on the cover!

  26. omg if tessa doesn’t end up with will im going to cry so much. i feel so bad for will. he’s so broken and he needs someone like tessa. onoly one more day though. im so excited. no matter what though i’ll always love cassandra claire as an author.

    • I just finished it and I am amazed! Just wow Cassie! Just when I thought it couldn’t get any better you come up with this. You go girl! This book made me laugh, cry, and scream. You’re my favorite author and pleeeeease don’t ever stop writing! If you haven’t read the book yet, do it soon! Keep the Kleenex handy though…

  27. I totally adore this book! Wonderful work once again! But beware its really sad i cried…and laughed…everyone will love it!

    • omg I read the book too I cried so many times at the end reading about wills death and his and tessas kids and jem being brother Zachariah and sofie and Gideon and sofie ascending to a shadowhunter and charlotte as the new consil and cecily and Gabriel being together

  28. i read the book and i say she ends it well. i am so glad she made both will and jem be with tessa.if youwant to know how, she makes jem turn into a silent brother until he finds a cure, which he does, and he turns back in 2007. [for the shadowhunters]also, tessa is a warlock,[mom=shadowhunter,dad=demon].this is possible because her mother wasnt marked ,so thats why tessa is how she is. she can also have fav part was when will rescues tessa:)my leat fav part is when will dies and when jem becomes a silent brother.i wish she did will and tessas wedding instead of wills death. that was really sad.

  29. SO first of all, reading all these comments above made me really mad and sad.I am a Tessa and Jem shipper and all you guys really need to be careful. Say one thing bad about Jem and I’ll rip your heart out.
    Just kidding, but still why are you guys so mean? I get it you like WIll better but that doesn’t mean you get to hate on Jem.
    I actually really love jem and tessa and I like Will too. SO i’m just ripped in half.
    ANyways, guy in Clockwork Princess Jem asks Sophie “Is it true then?” and sophie’s like what’s true? and it is said that sophie already knows what it is. And I’m pretty sure Jem is asking does tessa love will too? But just to be sure. WHat do you guys thinks?!?
    (By the way, I would appreciiatte if you replied without hating on Jem. Thanks!)

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