Perry Mason - Season 8 - Eps 23: The Case of the Murderous Mermaid
Former swimming champion Victoria Dawn is now overweight, out of shape, and the owner of a chain of failing health spas. Desperate to regain some of her former glory she hires young actress Regina "Reggie" Lambert to impersonate her in a swim across the Catalina Channel to Los Angeles.
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