From The TV IV
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Call Unicorn is the third episode of the first season of Cannon.
Guest Stars: Doris Lorentz (Waitress), Wayne Rogers (Steve), William Vaughn (Hotwire), Kent Hays (Charlie), Irene Gilbert (Velma), Rayford Barnes (Dan O'Connor), Patricia Smith (Gwen), Charles Cioffi (Marty), Joe Maross (Dave), Jenny Sullivan (Sharon), Karl Lukas (Rettig)
Cannon investigates a series of 'accidents' plaguing a trucking company.