A criminology professor uses scientific methods, advanced computer technology, his expertise in chess, and the leg work of several of his students to track down a crazed killer in San Francisco.

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Main Cast: William Conrad, Belinda Montgomery, Hilly Hicks, James Darren, Michael Parks, Cameron Mitchell, Tracy Reed, Nehemiah Persoff, Richard Dimitri, Nita Talbot

Director: Bernard L. Kowalski

Writer: Richard Jessup

Editor: George Jay Nicholson

Cinematographer: Matthew F. Leonetti

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