Secrets of Blackthorn Hall: An Illustrated Shadowhunters Novel by Cassandra Clare (Hardback)

An illustrated Shadowhunters mystery told through letters, diary entries, and messages, bringing fan-favourite characters together in a new adventure.

Secrets of Blackthorn Hall by Cassandra Clare expands the Shadowhunter world with a story that connects multiple series through a unique format.

Emma Carstairs and Julian Blackthorn are sent back to Blackthorn Hall, a neglected Gothic mansion hidden in London. The Clave has given them a clear task—restore the estate or lose it forever.

What begins as a simple duty soon reveals something more unsettling.

The house holds secrets buried deep within its walls. Strange occurrences suggest that Blackthorn Hall is not empty, and whatever lingers there is tied to the family’s past.

As Emma and Julian investigate, they draw in friends and allies from across the Shadowhunter world. Each letter, message, and entry adds another piece to the mystery.

The deeper they go, the more dangerous the truth becomes.

Blending mystery with character-driven storytelling, this illustrated edition offers a new perspective on a familiar world, bridging the gap between past stories and what comes next.