The Fly

After her husband Andre Delambre is crushed to death in a mechanical press, his wife recounts to his brother Francois Delambre and police Inspector Charas the events of the previous few months. They were very much in love and with their little boy, a very happy family. Andre was experimenting with teleportation - transporting objects from one point to another by breaking the object down to the atomic level and then reassembling it in a receiver a distance away. The system had some glitches - it seemed to work with inanimate object but his cat disappeared when he tried teleporting it. He thinks he's solved all of the problems with his invention and decides to try and teleport himself. When a fly enters the teleportation device with him, disaster strikes.

Fifteen years after his father's experiments with matter transmission fail, Philippe Delambre and his uncle François attempt to create a matter transmission device on their own. However, their experiments have disastrous results, turning Philippe into a horrible half-man, half-fly creature.

Remember that scientist that was trying to perfect a matter transportation machine but got fused with a fly when one of the little critters got into the transporter with him? Well, this story is about three of his descendants (a son, Henri Delambre, played by Brian Donlevy and two grandsons). Seems the son wants to continue and perfect the machine while his two sons want to get out of the scientist business and live "normal" lives. The oldest son, Martin, decides to take a wife (who just happens to have escaped from a mental hospital after her parents died). Martin's father is not happy with this intrusion but finally gives in because he understands him son's needs. They all try to be a happy family until humans used in botched experiments are discovered by the new bride and the police nearly discover the lab while looking for Martin's wife. Everyone tries to get out of there via the transporter but things just don't go according to plan .