Perry Mason: The Case of the Poisoned Pen

Earl Boen as Mr. Tweed Diane Shalet as Mrs. Joyce Barbara Hale as Della Street Charles Macaulay as Judge Charles Wade James McEachin as Lt. Brock Largo Woodruff as Judy Fulmer Tracy Smith as Reporter #2 Raymond Burr as Perry Mason Barbara Babcock as Martha Robertson Tony Lo Bianco as Michael Garcia Katherine Moffat as Rebecca Austin Cindy Williams as Rita Sue Bliss David Warner as Bradley Thompson Andy Romano as Asst. D.A. Jack LaRusso William R. Moses as Ken Malansky Kiel Martin as Max Mulgrew

Erle Stanley Gardner Novel Fred Steiner Original Music Composer David Solomon Co-Producer Bradford Lipson Gaffer