The latest episode of Sleepy Hollow, “Whispers in the Dark,” sounds like an Isley Brothers song. Indeed, this episode might as well have actually been called the Isley Brothers song, “Footsteps in the Dark,” since there were just as many darkened footsteps as there were secrets. Footsteps such as Ichabod’s who has just made himself at home in Abbie’s house, seemingly for an ulterior motive.