Mr And Mrs North - Season 1 - Episode 20 - Terror | Richard Denning, Barbara Britton

Lt. Weigand and the Norths become trapped in the rural home of Dr. Arno, a physician treating a homicidal maniac who's hiding somewhere in the house. The group stages a fake murder scene, hoping the mysterious "Patient X" will be drawn into the open. Instead, when the lights are lowered Dr. Arno's secretary is actually stabbed to death. Once Weigand learns the actual name of the patient, he makes some phone calls and learns they're deal with a real-life Jekyll and Hyde.

Jerry and Pamela North live in Greenwich Village in New York City. Jerry is a mystery magazine publisher who thinks he is a good amateur detective. He and his wife investigate various crimes and solve them before the police do.

Directed by Ralph Murphy, Lew Landers
Starring Richard Denning, Barbara Britton, Francis De Sales

Cast
Richard Denning as Jerry North
Barbara Britton as Pamela North
Francis De Sales as Lt. Bill Weigand
Lowell Gilmore as Dr. Avery Arno
Gloria Henry as Judy March
Lawrence Dobkin as Eric Huntley
Roy Roberts as 'Legs' Sherman
Wally Cassell as Frank Bonner