Katherine McNamara & 'Shadowhunters' Cast Stop By Cassandra Clare Book Signing

Katherine McNamara shares a smile with “The Mortal Instruments” author Cassandra Clare at a book signing for her latest novel “Lady Midnight” at Barnes & Noble at the The Grove on Tuesday night (March 8) in Los Angeles.

The 20-year-old actress was joined by the rest of the Shadowhunters cast including Harry Shum Jr, Isaiah Mustafa and Emeraude Toubia, who were there to support Cassandra, whose books inspired the television series.

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The new novel is part of Cassandra‘s “The Dark Artifices” trilogy which is the third series in “The Shadowhunter Chronicles.”

The entire cast was extremely excited about the event, taking to social media to share photos throughout the night.

“Happy Lady Midnight launch, Shadowhunters!” Cassandra wrote on her Instagram.