William Conrad
Nero Wolfe (14 eps)
Lee Horsley
Archie Goodwin (14 eps)
George Voskovec
Fritz Brenner (14 eps)
Robert Coote
Theodore Horstmann (14 eps)
Allan Miller
Inspector Cramer (14 eps)
George Wyner
Saul Panzer (14 eps)
David Hollander
Pete Drossos (2 eps)
Roz Kelly
Corey Baylor (1 eps)
Penelope Windust
Laura Fromm (1 eps)
Char Fontane
Violet Crown (1 eps)
Paul Koslo
Daniel Masters (1 eps)
Ed Lauter
Clay Baylor (1 eps)
Carlene Watkins
Jean Estey (1 eps)
Eddie Firestone
Willie (1 eps)
Katherine Justice
Angela Bell (1 eps)
Liam Sullivan
Paul Kessler (1 eps)
James R. Parkes
Barry Green (1 eps)
John Petlock
Michael Doran (1 eps)
Rhoda Gemignani
Mrs. Drossos (1 eps)
Marilyn Tokuda
The Nurse (1 eps)
Jon Lormer
The Butler (1 eps)
Anthony Costello
Charles Ceretti (1 eps)
Dick Ryal
Herbie (1 eps)
Gail Cameron
Doctor (1 eps)
Ramon Bieri
Leo Crown (1 eps)
John Ericson
Arthur Poor (1 eps)
H.M. Wynant
Eddie Meeker (1 eps)
Linden Chiles
Calvin Leeds (1 eps)
Diana Douglas
Sarah Rackham (1 eps)
Robert Loggia
Arnold Dorso (1 eps)