Now an adult, Phillipe Delambre (Brett Halsey) is determined to vindicate his father by successfully completing the experiment he had worked on. His uncle Francois (Vincent Price) refuses to help. Phillipe hires Alan Hines from Delambre Frere and uses his own finances, but the funds run out before the equipment is complete. When Phillipe threatens to sell his half of Delambre Frere, Francois relents and funds the completion. After some adjustments, they use the transporter to "store" and later re-materialize test animals.
Alan Hines turns out to be Ronald Holmes, an industrial spy. Holmes tries to sell the secrets to a shadowy cohort named Max. Before Holmes can get away with the papers, a British agent confronts him. Holmes knocks him out and uses the transporter to "store" the body. When rematerialized, the agent has the paws of a guinea pig that had been disintegrated earlier, and the guinea pig has human hands. Holmes kills the rodent and puts the dead agent in his car, which he sends into the Saint Lawrence River.
Phillipe confronts Holmes about all the oddities, with a fight ensuing and Phillipe being knocked out. Holmes hides Phillipe the same way he did the agent, but in a twist of malice he catches a fly and adds it to the transporter with him. Francois re-materializes Phillipe, but with a fly head, arm and leg while the fly has his head, arm and leg, becoming "PhillipeFly". PhillipeFly runs into the night, tracking down and killing Max. He waits for Holmes to arrive and kills him, too. PhillipeFly returns home, where Inspector Beecham has found and captured the PhillipeFly. Both are placed in the device together and successfully reintegrated.
What does Holmes put into the transporter with Phillipe?
Fly