A scientist's botched teleportation experiment results in his atoms getting mixed up with those of a fly, leaving his wife with a terrible choice - let him continue living in his mutated, dangerous state or put him out of his misery. Horror, starring David Hedison, Vincent Price and Herbert Marshall.

Industrialist François Delambre is called late at night by his sister-in-law, Helene, who tells him that she has just killed her husband. Reluctant at first, she eventually explains to the police that he invented a matter transportation apparatus and, while experimenting on himself, a fly entered the chamber.