When three murders are committed in and around the Grand Canyon, an Arizona sheriff (Cornel Wilde) sets out to investigate with hopes of bringing the killers to justice. Lacking any real leads, he enlists the assistance of a socialite and a bartender pal to assist in the case. But when he encounters a mysterious man who may be involved with the slayings, the lawman faces a dangerous confrontation. Victoria Shaw, Mickey Shaughnessy co-star in director Don Siegel's thrilling suspenser. 79 min. Widescreen (Enhanced); Soundtrack: English Dolby Digital mono.