AllMovie

Derrick de Marnay stars as a Parisian sculptor who enters into a deadly menage a trois. The girl in the case (Joan Greenwood) is a bit all right; alas, her husband is off his trolley. When he discovers the illicit affair, Hubby, a sculptor in his own right, bumps off his wife and conceals her body in a very clever and (for him) characteristic manner. DeMarnay must resort to the occult to determine the location of his lost love; had he but consulted the movie audience, his problem would have been solved. No relation to the later Hitchcock film of the same title, Frenzy was based on the play L'Angoisse by Pierre Mills and C. Vylars.