Cast of One Is a Lonely Number

Trish Van Devere plays Amy Brower, the main character, in the movie.

Monte Markham portrays Howard Carpenter in the film.

Janet Leigh takes on the role of Gert Meredith in the movie.

Melvyn Douglas plays Joseph Provo in the movie.

Jane Elliott portrays Madge Frazier in the film.

Jonathan Goldsmith plays Sherman Cooke in the movie.

Mark Bramhall appears as the Morgue Attendant in the movie.

Paul Jenkins portrays James Brower in the film.

Scott Beach plays Frawley King in the movie.

Henry Leff portrays Arnold Holzgang in the film.

Dudley Knight appears as King Lear in the movie.

Maurice Argent plays the role of Pool Manager in the film.