The San Francisco area is beset by a series of seemingly random murders without motive or pattern. The police are taunted by phone calls and letters. Could the maniac be the violent truck driver, or the seemingly mild-mannered mailman, or even a cop?

Cast:Hal Reed, Bob Jones, Ray Lynch, Mary Darrington, Frank Sanabek, Ed Quigley,

Genre:Crime, Horror, Thriller,

country:United States of America,

Production:Adventure Productions (II),