Secrets of Blackthorn Hall

By: Cassandra Clare

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Hardcover | 17 March 2026

At a Glance

Format
Hardcover

Dimensions(cm)
19.8 x 13.0

Hardcover

RRP $35.00

$28.75

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Experience this Shadowhunters story in a beautiful physical edition, collecting charactersâ letters and secrets from the across the world of Cassandra Clareâs beloved series.

Secrets of Blackthorn Hall is an illustrated epistolary novel by Cassandra Clare that was part of the Seasons of Shadowhunters Kickstarter campaign, now widely available in trade for the first time.

Julian and Emma are on their travel year when the Clave sends Julian a message: clean up Blackthorn Hall or ownership reverts back to the Clave. Amidst the clutter and disrepair, they discover secrets that Blackthorn Hall has kept hidden for years... including that something (or someone) else might be sharing the space with them.

Bridging the gap between The Dark Artifices books and the upcoming Wicked Powers series, this book offers an exciting glimpse at whatâs to come for Shadowhunters fans ahead of The Wicked Powers (2026).

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