Jim and Artemus are asked by a beautiful young woman, Lavinia Sedgewick, to help her mute grandfather. Both Sedgewickes seem to be under control of a controversial physician in their own mansion.

Cast: Robert Conrad, Ross Martin, Jay Robinson, Sharon Acker, Maria Lennard, Richard Hale, Frank Campanella, Lee Weaver, Arthur Space, Arthur Adams, Kathryn Minner, Brian Nash, Gene LeBell, William Challee, Anthony Jochim