A slasher in split-screen? 1973 horror's weirdest gimmick actually slaps.
Simmons, the manager of a seaside hotel in California, has a problem: Guests are turning up dead, and Sgt. Ramsey, the hotel's detective, has no information as to the identity of the murderer. The only thing anybody knows is that the killer wears a strange mask and has a fondness for blonde women. As Ramsey tracks down a list of suspects that includes the hotel handyman, Lisa, the hotel's lounge singer, finds herself in danger.
Direction
Bare commits fully to Duo-Vision, often showing the killer AND victim simultaneously.
Production
The rickety hotel set feels genuinely lived-in and creepy.
Director
Richard L. Bare
David Bailey
Rick Stewart
Tiffany Bolling
Lisa James
Randolph Roberts
Jason Gant
Scott Brady
Police Sgt. Ramsey
Edd Byrnes
Henry Peter 'Hank' Lassiter
Diane McBain
Dolores Hamilton
Madeleine Sherwood
Lenore Karadyne
Indira Stefanianna
Genny
Arthur O'Connell
Mr. Fenley, Hotel Engineer
Roger Bowen
Simmons, Hotel Manager
Jack Knight
Bill Broderick
Ian Abercrombie
Eddie (uncredited)
Patrick Wright
Stepfather (uncredited)
Trivia, insights & behind the scenes
Duo-Vision used two 35mm projectors running simultaneously; most theaters couldn't handle it, killing the film's release.
Bare invented the gimmick hoping to replicate William Castle's showmanship, but audiences found it confusing rather than thrilling.
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