 On the intrigue of invention to increase this spectacle, Planche created a stage mechanism which was fostered out of his own desire to have a trap-door in the Lyceum Theatre.This trap, otherwise known as the vampire-trap (because it gave expedited stage entry and exit to the vampire), operated on a mechanically innovative system.This trap-door was composed of two flaps in the stage, usually made from Indian rubber, in which the occasion should arise where pressure should be applied to these two flaps they would give way and allow the subject creating the pressure to drop beneath the stage.