These inside references were an acknowledgement of Hamilton's best known role as the Wicked Witch of the West in The Wizard of Oz.
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He attempts to kill Cyrus' son, Buck, using the falling bed canopy he used to kill Dr. Plato Zorba with, but Dr. Plato Zorba's ghost catches him in the act, driving the immediately terrified Benjamin Rush to his death in the bed just as Buck escapes, Benjamin Rush becomes the 13th ghost, and then the ghosts disappear.
Army of Ghosts | The Ghosts of Versailles | The Hungry Ghosts | Ghosts of the Great Highway | Ghosts of Mississippi | Ghosts of Loss | Ghosts of Girlfriends Past | Chasing Ghosts (album) | Chasing Ghosts | Transformers: Ghosts of Yesterday | Thirteen Ghosts | The Ghosts of Berkeley Square | Little Ghosts | Hungry ghosts in Chinese religion | Grim Grinning Ghosts (The Screaming Song) | Grim Grinning Ghosts | '''Gravel ghosts''' in Death Valley National Park | Ghosts on the Boardwalk | Ghosts of Abu Ghraib | Ghosts'n Goblins | Ghosts in Bengali culture | Gaunt's Ghosts | Dead Cities, Red Seas & Lost Ghosts | Chasing Ghosts: Beyond the Arcade | Arthur (Ghosts 'n Goblins) |