Det. Bill Brennan (29 episodes, 1964-1966)
Ben Needham / ... (2 episodes, 1962-1963)
Mr. Gaffney / ... (4 episodes, 1962-1965)
Dr. Johnson / ... (4 episodes, 1960-1963)
Amos Skinner / ... (2 episodes, 1961-1962)
Bruce Sheridan / ... (4 episodes, 1959-1965)
Albert Martin / ... (3 episodes, 1956-1959)
District Attorney / ... (3 episodes, 1954-1957)
Judge / ... (2 episodes, 1955-1959)