nLynette Mettey (1976-1977) as Lee Potter, Anita Gilette (1982-1983) as Dr. Emily Hanover, Eddie Garrett as Ed, John Nolan as Bartender, Peter Virgo as Pete and Filip field as Lab Technician. Actor James A. Watson Jr. periodically throughout the series) appeared many times as the level-headed District Attorney Jim Barnes, while Joseph Sirola portrayed District Attorney Sal Angeletti in at least two episodes (“Into the Murdering Mind”, “Expert In Murder”). Ed Grover and John Karlen appeared as the comical Abbott and Costello-like team of Special Agents Brice and Nivens (“Hot Ice,” “Dear Mummy”). Also, it should be noted that Actress Diane Markoff, Waitress Diane (1980-1983), who’s name appears in almost every episode’s closing credits, did not always make “on camera” appearances in every episode.nnnnn