Madison Roberts doesn't know how old she is. The doctors estimate her age between sixteen and twenty. You see, Madison isn't even her real name. She's an amnesiac, living in Brooklyn, New York, with only an odd-shaped key and an old matchbook as clues to her identity. When the apartment she shares with her roommates turns out to be haunted by a ghost with anger management issues, Madison's attempt to get to the bottom of the haunting leads to Sleepy Hollow, New York and connections to a past she never could have imagined.