Shadowhunters Julian and Emma from The Dark Artifices series move to London to fix the crumbling Blackthorn Hall, only to find letters and secrets from Shadowhunters who came before them.

Shadowhunter Matthew Fairchild from Edwardian London embarks on a murder mystery aboard an ocean liner journey from Greece to Constantinople, with his dog Oscar Wilde and Sylvain Verlac, a captivating Parisian Shadowhunter whom he can’t help but fall for.