When Simon is kidnapped by the fey, he's amazed to find a friend in former Shadowhunter Mark Blackthorn. One of ten adventures in Tales from the Shadowhunter Academy.

After Simon is kidnapped by faeries (why is he always kidnapped?), he uncovers rumours of a secret weapon Sebastian left behind for the faerie queen. He must escape the Fey, relying on his only ally, former Shadowhunter and Dark Artifices character Mark Blackthorn.

This standalone e-only short story follows the adventures of Simon Lewis, star of the #1 New York Times bestselling series The Mortal Instruments, as he trains to become a Shadowhunter. Tales from the Shadowhunter Academy features characters from Cassandra Clare's Mortal Instruments, Infernal Devices, and the upcoming Dark Artifices and Last Hours series. Bitter of Tongue is written by Cassandra Clare and Sarah Rees Brennan.