Saw The Iron Trial's coverage and the first two chapters and I'm already excited for their first series to come.
Callum Hunt©cassandraclare and Holly Black


Saw The Iron Trial's coverage and the first two chapters and I'm already excited for their first series to come.

Callum Hunt©cassandraclare and Holly Black



#magisterium cuff. @cassieclare @hollyblack Every student gets one of these. Iron strip means first year student. Stones are earned when an element is mastered…are you ready to become a Mage?


#magisterium cuff. @cassieclare @hollyblack Every student gets one of these. Iron strip means first year student. Stones are earned when an element is mastered…are you ready to become a Mage?

The Last Hours

Hi cassie! I am a huge fan of your books and i was wondering about your upcoming book series TLH. I looked it up online but I cannot seem to be able to find much on it. There is probably a limit of things you are willing to mention about the series, so I was wondering if you tell me what has been already released about the series? — thislittlebookowl

Hello Cassie! I am a huge, huge fan. :) I was wondering if you could maybe give some insight as to how the characters in The Last Hours are going to act, like their personalities and such. — thelastinstruments

There is a limited amount I can say, especially this far in advance — and keep in mind things can always change. But this is pretty much what we know so far, the illustrated version:

The Last Hours is a new Shadowhunters series set in 1903. It deals with the next generation after Will, Tessa and Jem as well as Charlotte and Henry’s children, Tatiana Blackthorn’s children, the Lightwood kids, and many more. 1903 is right around the time the Victorian era tips over into the Edwardian era — beautiful clothes, fabulous history and so much more that I’m excited to write about! (I’ve even been keeping a crazy Pinterest board for inspiration.) The title is taken from the book Great Expectations, of which the series is a retelling: those of you who’ve read The Midnight Heir installment of the Bane Chronicles probably have some ideas about certain of the characters!

You have been in every line I have ever read, since I first came here, the rough common boy whose poor heart you wounded even then. You have been in every prospect I have ever seen since — on the river, on the sails of the ships, on the marshes, in the clouds, in the light, in the darkness, in the wind, in the woods, in the sea, in the streets. You have been the embodiment of every graceful fancy that my mind has ever become acquainted with. The stones of which the strongest London buildings are made, are not more real, or more impossible to be displaced by your hands, than your presence and influence have been to me, there and everywhere, and will be. Estella, to the last hours of my life, you cannot choose but remain part of my character, part of the little good in me, part of the evil. — Great Expectations, Charles Dickens

There will be three books: Chain of Thorns, Chain of Gold, and Chain of Iron — also a reference to Great Expectations.

(“Imagine one selected day struck out of it, and think how different its course would have been. Pause you who read this, and think for a moment of the long chain of iron or gold, of thorns or flowers, that would never have bound you, but for the formation of the first link on one memorable day." — Great Expectations)

The books will interconnect with The Dark Artifices trilogy as two separate trilogies that are also the stories of the Blackthorns, Herondales and Carstairs, much like TMI and The Infernal Devices interconnected despite taking place in different time periods and locations. The exact order of publication isn’t decided yet. Lady Midnight, the first of the Dark Artifices, will certainly be the next Shadowhunter book coming out, and I’ll keep you up to date on the publication order when it’s nailed down.

I hope you’re looking forward to reading about Jem, Tessa and Will and their immediate families and descendants as much as I am looking forward to writing about them! In the meantime, I thought you might like to see/get to know a few of the prominent characters. Cassandra Jean drew these for me back when I was still solidifying some of the plot outlines and character details. You can also find most of these names on the family tree and identify their connections. Let’s start with …

image Cordelia Carstairs. Daughter of Jem’s Uncle Elias. Bit of a scapegrace and ever since she was ten she’s had a sort of a crush on

image James Herondale, who is parabatai with image the always-delightful Matthew Fairchild. James is totally in love with and has a very odd relationship with Tatiana’s Blackthorn’s ward image Grace Blackthorn, whose brother Jesse Blackthorn may or may not be dead image a mystery that occupies the busy brain of writer image Lucie Herondale, whose father would really prefer she marry image Alastair Carstairs, Cordelia’s older brother. Shown with Cortana — looks like Elias did as Tessa suggested and passed it down to his own children after all.Alastair is best friends with image Charles Fairchild, who you may remember as Potentially Buford from Clockwork Princess. Charles would like to be the next Consul, alas, and Henry finds he rather gets along better with Cecily and Gabriel’s son image Christopher, a scientist, who is the younger brother of the ever so sophisticated image Anna Lightwood, who keeps her own flat on Percy Street and everyone else’s secrets.

This isn’t all the characters, but it’s a visual tour of quite a few of the significant ones (barring those, like Tessa, Jem, Will and the other adults, who you already know!) I find having visuals of characters often helps while I’m writing so these live above my desk!

Shadowhunter Academy titles


Hello, CC! Do you have any news for us about The Secret Treasons and The Shadowhunter Academy? Thank youuu! <3 — yssaoeyt

Well, TST is a big art project, so, it happens when it happens. I don’t know when it’ll be exactly.

I’m holding off also on saying too much about Academy until we nail down dates — it will be ten stories, like the Bane Chronicles, and like the Bane Chronicles will end up as a print book eventually. The stories cover Simon’s arrival at the Academy through to his Ascension Ceremony, but a lot of them also time-hop: back to 1830, 1893, 1900, to the time of the Circle and some switch perspectives. I’ll say more when we make the actual announcement but for now have the list of titles to play with!

1) Welcome to the Shadowhunter Academy.

2) The Lost Herondale.

3) The Whitechapel Fiend.

4) Nothing But Shadows

5) The Evil We Love

6) Pale Kings and Princes

7) Bitter of Tongue

8) The Fiery Trial

9) Born to Endless Night

10) Angels Twice Descending

Last but assuredly not least, Cassandra Jean&#8217;s Tessa and Will and the DSDS in Clockwork Princess.

Last but assuredly not least, Cassandra Jean’s Tessa and Will and the DSDS in Clockwork Princess.

More Cassandra Jean sexytimes — Jem and Tessa in Clockwork Prince. 

More Cassandra Jean sexytimes — Jem and Tessa in Clockwork Prince. 

Hi Cassie! Has CJP finished all the DSAS/DSBS/DSES/DSDS pictures? I’m not sure if she has and I’ve missed them but I’ve only ever seen the DSES and the DSAS and that was a while ago… I can’t seem to find them anymore. Could you repost them? — tmitidtdatlh

Ask and ye shall receive. The first is the DSAS which started it all — Clary and Jace in City of Fallen Angels. The second is Clary and Jace in the club in City of Lost Souls. And the last is Clary and Jace in Edom in City of Heavenly Fire. I believe they grow progressively more nakedish in each picture (though there is NO NUDITY here.)

There are also two from The Infernal Devices, which I will post separately in a minute.

Magisterium signings

HEY CASSIE! Will you (and Holly) be doing any promotional stuff for The Iron Trial  in the UK/Scotland? I know you’re very busy, but it would be amazing to hear from you! — palace-within-0ur-dreams


Yes, Holly and I will be doing events in the UK for The Iron Trial! We’re very excited about it. I like banoffee, and Holly likes to drive on the wrong side of the road and scream. We’ll be here:


Though to actually buy tickets and see the info at a decent size, you have to go here (click link)

We’ll also be at the Bath Festival for Children’s Literature on October 4 of this year, and you can find the info/get tickets here:


I’ve decided every time I answer a Magisterium question I will include a snippet of art or info. This is one of the interior illustrations, done by Scott Fischer.


It shows the wristband of a Magisterium apprentice. When students are chosen for the Magisterium, they are issued wristbands. The metal part of the wristband is changed out every year and shows which year you’re in (first year=iron, second year=copper, third year=bronze, fourth year=silver, fifth year=gold.) There are also places on the wristband where stones are affixed when you master an element — a blue stone for water, for instance, or the rare black stone for those who have mastered the sixth element, Chaos. The wristband pictured belonged to a specific person so it does have a black stone in it.

We’ll be adding more signings in the US, UK, Netherlands, Germany, Spain and Portugal so stay tuned!

Whee! Magisterium got a starred review in Publisher’s Weekly. In celebration I thought I’d put up Cassandra Jean’s art of Call’s friends, Aaron Stewart and Tamara Rajavi.

ReviewL Set in a magic-inflected version of the present-day U.S., this first title in the Magisterium series combines the talents of Black (Doll Bones) and Clare (the Mortal Instruments series) in a thrilling coming-of-age story that embraces fantasy tropes while keeping readers guessing. Twelve-year-old Callum Hunt has been raised to distrust magic. Mages killed his mother, and his father has warned him that the Magisterium, a school where young mages are trained, is a deathtrap. Callum’s attempts to fail the entrance exam go awry, and he is chosen to apprentice under Master Rufus, along with fellow students Aaron and Tamara. As Callum, Tamara, Aaron, and their classmates embark on their first of five years of schooling, Callum realizes how little he knows of his own heritage. The strange, subterranean Magisterium is vividly rendered, and a string of ominous revelations will leave readers eager for future installments. Fans of both authors will enjoy getting to know this well-rounded cast in the first steps of their adventure.

People often ask what the parabatai ceremony looks like, so I asked Cassandra Jean to render Emma and Julian’s, complete with the oath and the the three rings of fire — you step from your individual ring into the shared ring, and you draw the rune on each other. Don’t try the fire part at home.