- "I know you're all very busy, destroying your lives, day after rich day."
- —Jeremy Crane to the 3 thugs at the motel
"Spellcaster" is the fifteenth episode of Season Two of Fox's Sleepy Hollow. It was written by Albert Kim and directed by Paul Edwards. It is the twenty-eighth episode of the series overall, and debuted on February 2, 2015.
After escaping Purgatory, a warlock who triggered the Salem witch trials returns to find a dangerous book of spells. Meanwhile, Abbie attempts to trust Frank Irving again, while Jeremy struggles to find his identity.
Ichabod and Abbie learn that a powerful Warlock who was responsible for the Salem witch trials had escaped from purgatory following the demise of Moloch, and is attempting to change the past with the Grand Grimoire. They learn from Katrina that the man was responsible for the death of a woman he believed loved him. She tells them that the witches coven had banded together and banished him to purgatory for his actions. With Katrina's help, they confront the man but he escapes after overpowering her. Katrina ponders the Warlocks comments about submitting to the dark side to become more powerful and decides to leave the Warlocks capture to Ichabod and Abbie. Ichabod and Abbie enlist Irving to help fight the Warlock and Ichabod suggests that they use elements against him, realizing that Katrina's elemental magic had an effect on him. They are able to track him down and electrocute him, Ichabod then attacks the man viciously before being pulled away by Abbie. Meanwhile, while Abbie and Ichabod look for him, Irving takes the Grimoire and snaps the neck of the Warlock who then vanishes. Irving then gives the Grimoire to Henry who responds with familiarity to him.
- In Japan, this episode is known as The Sorcerer's Bible (魔法使いのバイブル Mahoutsukai no Baiburu) and it refers to John Dee's Grand Grimoire.