Crime under the microscope. Introducing Police chemist Gordon McKay.

Van Heflin stars as the head of a city crime lab who tries to solve the murder of the town mayor by scientifically analyzing evidence.

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Main Cast: Van Heflin, Marsha Hunt, Lee Bowman, Samuel S. Hinds, Cliff Clark, Eddie Quillan, John Litel, Cathy Lewis, Nella Walker, Robert Blake

Director: Fred Zinnemann

Writers: John C. Higgins, Allen Rivkin

Editor: Ralph E. Winters

Cinematographer: Paul Vogel

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