For this module of the 'Collected Apparitions' project, the challenge was to create an installation for the white cube of an art gallery. The installation dusts off the 'Pepper's Ghost', a 19th century optical illusion used at the end of the 19th century to make ghosts appear on stage. Heads, inspired by ventriloquist puppets but animated by servomotors, wake up slowly in an unstable and dreamlike environment to discover that they have a voice. Like a sort of mechanical cinema, the installation meditates the dynamic between skepticism and faith, illusion and reality, or the familiar and the strange.