Release Message:  Peter Caxton, a physics teacher who rents films for his school. He takes the movie projector, that seems to be changing the intended films into films from the future, home for investigation. Writte by A. E. van Vogt.

Description:  The protagonist of the novel is Peter Caxton, a physics teacher who, as in the story "Film Library", rents films for his school. He takes the movie projector, that seems to be changing the intended films into films from the future, home for investigation. Caxton, then waking in hospital, is the amnesiac traveling salesman from the story "The Search"; he goes back over his sales territory to discover what happened. He meets Selanie, who is selling gadgets from the future, and her father Claudan Johns; they are time travelers, and he discovers their motor home that contains the gadgets.