Perry Mason - Season 1 - Eps 16: The Case of the Demure Defendant
Nadine Marshall lives with her Uncle Martin and Captain Hugo. She comes home excited with the news of her engagement to John Locke. When she tells her Uncle Martin, he shows her some papers about her family which upset her. When Nadine visits John Locke, she takes some cyanide pills without John noticing. Later that evening Nadine makes her Uncle Martin's nightly hot chocolate and he dies shortly afterward. Nadine is accused of murder when she makes a taped confession that she killed her uncle.
About Perry Mason

Title: Perry Mason
First Air Date: 1957-09-21
Last Air Date: 1966-05-22
Status: Ended
Rating: 7.7/10 (from 123 votes)
Language: EN
Seasons: 10
Total Episodes: 271
Network: CBS
Genres: Mystery, Drama, Crime
Production Companies: Paisano Productions, TCF Television Productions, CBS
Synopsis
The cases of master criminal defense attorney Perry Mason and his staff who handled the most difficult of cases in the aid of the innocent.
Cast

Raymond Burr
Perry Mason

Barbara Hale
Della Street

William Hopper
Paul Drake

William Talman
Hamilton Burger

Ray Collins
Lieutenant Tragg