Bones (2005)

S11E5 The Resurrection in the Remains (I)

As Halloween approaches at The Jeffersonian, the team is unexpectedly joined by Lt. Abbie Mills and Ichabod Crane, who have journeyed from the eerie town of Sleepy Hollow to assist in a murder investigation. They uncover the body of a young woman lying atop the decapitated corpse of an 18th-century general. The four must collaborate to unravel the mystery of the ancient headless body and its connection to the recent murder. Meanwhile, Booth and Brennan engage in a playful rivalry, devising elaborate Halloween pranks to outsmart one another. The crossover continues on Sleepy Hollow S03E05 Dead Men Tell No Tales (II).