Industrialist François Delambre is called late at night by his sister-in-law, Helene Delambre, who tells him that she has just killed her husband, André. Reluctant at first, she eventually explains to the police that André invented a matter transportation apparatus and, while experimenting on himself, a fly entered the chamber during the matter transference.
David Hedison
Patricia Owens
Vincent Price
Herbert Marshall
Kathleen Freeman
Betty Lou Gerson
Charles Herbert
Eugene Borden
George Calliga
Harry Carter
Bill Clark
Arthur Dulac
Bess Flowers
Herschel Graham
Torben Meyer
Sol Murgi
George Nardelli
Franz Roehn
Charles Tannen