The Sleepy Hollow Cemetery contains the false grave of Katrina Crane, but she was not buried in it. Instead, the Headless Horseman's skull was hidden in it, a secret kept by Reverend Alfred Knapp for more than two centuries.

In The Indispensable Man, Abbie Mills and Ichabod Crane requested Henry Parrish's presence at the cemetery to read Rev. Knapp's Prayer Beads so they could learn what its secrets were.