Experiment in Terror was released in the year 1962。Experiment in Terror is also called as Stemmen i mørket, Operazione terrore, Mercader del terror, Mercader de terror, Kestävyyskoe, Kauhun lunnaat, Chantaje contra una mujer, brigade spéciale, Allô, Letzte Zug。

Kelly Sherwood is terrorized by a man with an asthmatic voice who plans to use her to steal $100,000 from the bank where she works. He threatens to kill her teenage sister Toby, if she tells the police. However she manages to contact F.B.I. agent Ripley.

Experiment in Terror actors and actresses include Lee Remick, Stefanie Powers。