Dr. Simon Locke (95 episodes, 1971-1975)
Lt. Jack Gordon (53 episodes, 1972-1975)
Lt. Dan Palmer (38 episodes, 1971-1973)
Dispatcher (34 episodes, 1972-1974)
Dr. Andrew Sellers (26 episodes, 1971-1972)
Nurse Louise Wynn (25 episodes, 1971-1972)
Shay / Desk Sergeant / Mr. Barnett / Officer / Officer Baker / Officer Morgan / Police Officer (14 episodes, 1971-1975)
Jake / Barrows / Ben / Gann / Jake's Father / Vlahos (8 episodes, 1971-1974)
Amos Dawes / Johnson / Mazur / Mr. Harris / Mr. Johnson / Mr. Zivner (6 episodes, 1971-1975)
Dispatcher (6 episodes, 1974-1975)
Eddie Hammond / Williston / Jordan (5 episodes, 1971-1975)
Kid / Al Ward / Judd / Richard Anderson (5 episodes, 1971-1975)
Amy / Marta Morgan / Mary / Ruth / Wilma (5 episodes, 1972-1975)
Ruth / Nancy Williams / Valentina Thorpe (4 episodes, 1971-1974)
Charlie / Harry the Fence / Matt (4 episodes, 1972-1975)
Alan / Morgan / Officer Davies / Officer Morgan (4 episodes, 1973-1974)
Aline / Carol / Karen Benson (3 episodes, 1972-1974)
Al Kutner / Boulder / Man (3 episodes, 1973-1975)
Chick / Les / Tony (3 episodes, 1973-1975)
Carol / Gina / Lucy (3 episodes, 1971-1974)
Ernie / Pete (3 episodes, 1971-1973)
Guard No. 1 / Luddy / Stranger (3 episodes, 1971-1972)
Abel Marsh / Druggist / Josh (3 episodes, 1971-1972)
Frank Morris / John Manyhorses / Pete Denham (3 episodes, 1971-1972)
Harry Lyon / Oscar Harmon (3 episodes, 1972-1975)
Hugh Fleming / Renard / Victim (3 episodes, 1972-1975)
Bartender / Joe / Weeks (3 episodes, 1972-1975)
Fence / Mr. Lomax / Schwariman (3 episodes, 1972-1975)
Albert Masterson / Briggs / Moraine (3 episodes, 1972-1974)
David Adams / Lane / Scott Davis (3 episodes, 1972-1974)
Al / Chuck / Dale Somerfield (3 episodes, 1972-1974)
Caller / Jerry / Trock (3 episodes, 1972-1974)
Colonel Hauser / James McMulin / Nate (3 episodes, 1972-1974)
Mr. Somerfield / Tony Varden / Turelli (3 episodes, 1972-1974)
Charley / George / Mel (3 episodes, 1972-1974)
Carsen / Jones / Officer Jones (3 episodes, 1972-1973)
Dr. Bonner / Dr. Lusk / Willard (3 episodes, 1972)
Andy Fane / Jonathan Frye / Max Ziegler (3 episodes, 1973-1975)
Paul Shaver / Danny Arthur (3 episodes, 1973-1975)
Andy Carrigan / Jeff Darryl / Paul (3 episodes, 1973-1974)
Casper / Marty / Ted Rollins (3 episodes, 1973-1974)
Meyer / Irv Davis (3 episodes, 1973-1974)
Kenyon Bishop / Paul Scott / Roger Fleming (3 episodes, 1973-1974)
Elmo Haney / Joseph Pollito / Mike (3 episodes, 1973-1974)
Billy / Pete (3 episodes, 1973-1974)
Bert / Harvey Primo / Haynes (3 episodes, 1973-1974)
Bartender / Carrigan / Neames (3 episodes, 1973-1974)
Jake / Joseph Herara / Nick Katomeris (3 episodes, 1973)
Brenner / General Herara / Markle (3 episodes, 1973)
Gaines / Julius / Truck driver (3 episodes, 1974)
Andrea Kerns / Jean / Jean Abbott (3 episodes, 1974)
Boggs / George Bartlett (2 episodes, 1973)
Elroy / Wally (2 episodes, 1971-1974)
Bill / Steve Darryl (2 episodes, 1971-1973)
Ellie / Mary Blue Foot (2 episodes, 1971-1973)
Emma / Mrs. Johnson (2 episodes, 1971-1972)
Doyle / Marty (2 episodes, 1971-1972)
Carrie / Helen (2 episodes, 1971-1972)
Henry Kinmond / Herbie (2 episodes, 1971-1972)
Karen / Kate Cardwell (2 episodes, 1971-1972)
Elaine / Lea (2 episodes, 1971-1972)
Mrs. Carpenter / Mrs. Rhodie (2 episodes, 1971-1972)
Marko / Ty Watson (2 episodes, 1971)
Dekker / Police Sergeant (2 episodes, 1972-1975)
James Blinn (2 episodes, 1972-1974)
Mike / Tabor (2 episodes, 1972-1974)
Catherine / Stella (2 episodes, 1972-1974)
Meter Maid / Sally (2 episodes, 1972-1974)
May Carter / Mrs. Wallace (2 episodes, 1972-1974)
Policewoman (2 episodes, 1972-1974)
Lou / Roman (2 episodes, 1972-1974)
Andi / Norma Carlin (2 episodes, 1972-1973)
Duke / George Ossman (2 episodes, 1972-1973)
Frank / Menzies (2 episodes, 1972-1973)
Doreen / Jill (2 episodes, 1972)
Mrs. Rhodie (2 episodes, 1972)
Jean / Wilma (2 episodes, 1972)
Frank / Tom (2 episodes, 1973-1975)
Barney Davis / Joe Flatt (2 episodes, 1973-1974)
Ed (Seaman No. 5) / Tom Thorpe (2 episodes, 1973-1974)
Jan / Polly (2 episodes, 1973-1974)
George Harrison / Spencer (2 episodes, 1973-1974)
Miller / Police Officer (2 episodes, 1973-1974)
Sacks / Walter (2 episodes, 1973-1974)
Quinn / Will (2 episodes, 1973-1974)
Al / Tony (2 episodes, 1973-1974)
Miss Harmon / Pregnant Girl (2 episodes, 1973-1974)
Officer Baker / Officer Gomez (2 episodes, 1973-1974)
Bitsy / Eddie (2 episodes, 1973-1974)
Buckly / Eddie (2 episodes, 1973)
Arline (2 episodes, 1973)
Sadie Meyer (2 episodes, 1973)
Logan / Pappas (2 episodes, 1973)
Ramon / Richie Beck (2 episodes, 1974-1975)
Bonnie / Gloria (2 episodes, 1974-1975)
Eddie Morgan / Luddy (2 episodes, 1974-1975)
Jerry Shields / Sam Sitko (2 episodes, 1974-1975)
Lang / Rusman (2 episodes, 1974-1975)
Donald Clarke / Lou Curtis (2 episodes, 1974-1975)
Babe / Security Guard (2 episodes, 1974-1975)
Dr. Walker / Max (2 episodes, 1974-1975)
Don / Duke (2 episodes, 1974-1975)
Swanson / Will Rainer (2 episodes, 1974-1975)
Freddie / Professor Jeffries (2 episodes, 1974-1975)
Berkley / Feeney (2 episodes, 1974-1975)
Mary Bell / Vivian Anderson (2 episodes, 1974)
Guard / Sam Stevenson (2 episodes, 1974)
Ella / Kerri (2 episodes, 1974)
George Gillian / Stollis (2 episodes, 1974)
Judge / Mike Carrigan (2 episodes, 1974)
Blind Man / Jake (2 episodes, 1974)
Anne Ward / Sheila (2 episodes, 1974)
Officer Gomez / Officer Miller (2 episodes, 1974)
Cal / Exton (2 episodes, 1974)
Dave / Officer #1 (2 episodes, 1974)
Ben / Store manager (2 episodes, 1974)
Killer #1 / Stacey (2 episodes, 1974)
Dr. Harmon / Morrison (2 episodes, 1975)
Ben Grover (1 episode, 1973)
Clara (1 episode, 1973)
Ned (1 episode, 1971)
Ed (1 episode, 1971)
Henny (1 episode, 1971)
Al (1 episode, 1971)
Edie (1 episode, 1971)
Fred (1 episode, 1971)
Mrs. Thompson (1 episode, 1971)
Sam Macklin (1 episode, 1971)
Jake (1 episode, 1971)
Mrs. Lucy Becker (1 episode, 1971)
Josie (1 episode, 1971)
Asbury (1 episode, 1971)
Dr. Wendland (1 episode, 1971)
Bartender (1 episode, 1971)
Tom Blue Foot (1 episode, 1971)
Miss William (1 episode, 1971)
Charlie Cardwell (1 episode, 1971)
Max (1 episode, 1971)
Jerry Hahn (1 episode, 1972)
Cortessa (1 episode, 1972)
Talbot alias Joplin (1 episode, 1972)
Carl Vincent (1 episode, 1972)
Dave Morgan (1 episode, 1972)
12 year-old girl (1 episode, 1972)
Marge Kinmond (1 episode, 1972)
Nurse (1 episode, 1972)
Father (1 episode, 1972)
Rene (1 episode, 1972)
Costa (1 episode, 1972)
Paul (1 episode, 1972)
Norma Clayton (1 episode, 1972)
Connie Hart (1 episode, 1972)
Danny (1 episode, 1972)
Garage owner (1 episode, 1972)
Sam Dawes (1 episode, 1972)
Dartman Ben (1 episode, 1972)
Tony (1 episode, 1972)
Andrea (1 episode, 1972)
Larry Frost (1 episode, 1972)
Jeff (1 episode, 1972)
Scott (1 episode, 1972)
Phil Clayton (1 episode, 1972)
Gracie (1 episode, 1972)
Lydia (1 episode, 1972)
Joe (1 episode, 1972)
Man in booth (1 episode, 1972)
The Killer (1 episode, 1972)
Helen Adams (1 episode, 1972)
Ed Barnes (1 episode, 1972)
Ryan (1 episode, 1972)
Dave (1 episode, 1972)
Counterman (1 episode, 1972)
May (1 episode, 1972)
Sara (1 episode, 1972)
Ellen Hewitt (1 episode, 1972)
Shaw (1 episode, 1972)
Lou (1 episode, 1972)
Ralphey Kinmond (1 episode, 1972)
Manager (1 episode, 1972)
Joe Hart (1 episode, 1972)
Newsmen (1 episode, 1972)
Mary (1 episode, 1972)
Collie (1 episode, 1972)
Dorothy (1 episode, 1972)
Annie Kinmond (1 episode, 1972)
Laura March (1 episode, 1973)
Delbert Norman Woodward (1 episode, 1973)
Frank (1 episode, 1973)
Carter (1 episode, 1973)
Mr. John Warren (1 episode, 1973)
Officer Mack Houston (1 episode, 1973)
Lt. Dick Garr (1 episode, 1973)
Ben (1 episode, 1973)
Ed (1 episode, 1973)
Marian (1 episode, 1973)
Kateromeris (1 episode, 1973)
Brogan (1 episode, 1973)
Amos (1 episode, 1973)
Patty (1 episode, 1973)
Roche (1 episode, 1973)
Baker (1 episode, 1973)
Lewis (1 episode, 1973)
Eddie (1 episode, 1973)
Angie Pollito (1 episode, 1973)
Mrs. Payne (1 episode, 1973)
Gelson (1 episode, 1973)
Kagel (1 episode, 1973)
Marty (1 episode, 1973)
Carl (1 episode, 1973)
Joey Davidson (1 episode, 1973)
Jill (1 episode, 1973)
Peggy (1 episode, 1973)
Vasconi (1 episode, 1973)
Nelson (1 episode, 1973)
Willy (1 episode, 1973)
Charney (1 episode, 1973)
Ganer (1 episode, 1973)
Phyllis Woodward (1 episode, 1973)
Mrs. Flatt (1 episode, 1973)
Miller (1 episode, 1973)
Johnnie (1 episode, 1973)
Lenny (1 episode, 1973)
Saleswoman (1 episode, 1973)
Ellen (1 episode, 1973)
Bartender (1 episode, 1973)
Duncan (1 episode, 1973)
Ann Raymond (1 episode, 1974)
Molly Sims (1 episode, 1974)
Counselor Paul Madden (1 episode, 1974)
Rosalind Almont (1 episode, 1974)
Diana Simpson (1 episode, 1974)
Jimmy (1 episode, 1974)
Tad (1 episode, 1974)
Larry Burton (1 episode, 1974)
Charlie Kreber (1 episode, 1974)
Rick (1 episode, 1974)
The Cat (1 episode, 1974)
(1 episode, 1974)
Wally (1 episode, 1974)
Rose (1 episode, 1974)
David Altamont (1 episode, 1974)
Greg Jarrett (1 episode, 1974)
Sutton (1 episode, 1974)
Tony (1 episode, 1974)
Aunt Anna (1 episode, 1974)
Anthony Varden Jnr. (1 episode, 1974)
Doctor (1 episode, 1974)
Barney Ames (1 episode, 1974)
Jason (1 episode, 1974)
Vinny (1 episode, 1974)
Billy (1 episode, 1974)
Jean Peret (1 episode, 1974)
Albert (1 episode, 1974)
J.D. Cody (1 episode, 1974)
Clara (1 episode, 1974)
Dave (1 episode, 1974)
Officer #1 (1 episode, 1974)
Andy (1 episode, 1974)
Rimmer (1 episode, 1974)
Sally Madden (1 episode, 1974)
Matt (1 episode, 1974)
Tom (1 episode, 1974)
Lou Mason (1 episode, 1974)
Howard Bundt (1 episode, 1974)
Lenny (1 episode, 1974)
Mrs. Case (1 episode, 1974)
Harvey Stengal (1 episode, 1974)
Killer #2 (1 episode, 1974)
Desk sergeant (1 episode, 1974)
Carson (1 episode, 1974)
Ryerson (1 episode, 1974)
Lou (1 episode, 1974)
Jennie (1 episode, 1974)
Real Estate Lady (1 episode, 1974)
Hood (1 episode, 1974)
Bartender (1 episode, 1974)
Dr. Ward (1 episode, 1974)
Nurse (1 episode, 1974)
Teddy (1 episode, 1974)
Druggist (1 episode, 1974)
Joan (1 episode, 1974)
Bob (1 episode, 1974)
Ruth Kreber (1 episode, 1974)
Plain clothesman (1 episode, 1974)
Al McBride (1 episode, 1974)
Amy Vincent (1 episode, 1974)
Tim Cheney (1 episode, 1974)
Dispatcher (1 episode, 1974)
George (1 episode, 1974)
Johnny (1 episode, 1974)
Sam (1 episode, 1974)
Josie (1 episode, 1974)
Tiny (1 episode, 1974)
Bellboy (1 episode, 1974)
Ken (1 episode, 1974)
Min (1 episode, 1974)
The Killer (1 episode, 1974)
Ed Harley (1 episode, 1974)
Cleaning lady (1 episode, 1974)
Operator (1 episode, 1974)
Donald (1 episode, 1974)
Edie (1 episode, 1974)
Mo Ainsley (1 episode, 1974)
Miles (1 episode, 1974)
Lynn Gunther (1 episode, 1975)
Brian Lewis (1 episode, 1975)
Val (1 episode, 1975)
Secretary (1 episode, 1975)
Caro (1 episode, 1975)
Carol Thompson (1 episode, 1975)
Joe Faber (1 episode, 1975)
Mark Lujack (1 episode, 1975)
Sheila Lyon (1 episode, 1975)
Sally Hobson (1 episode, 1975)
Lab Director (1 episode, 1975)
Norma Hudson (1 episode, 1975)
Charlie (1 episode, 1975)
Stella (1 episode, 1975)
Red (1 episode, 1975)
Band Leader (1 episode, 1975)
Nurse (1 episode, 1975)
Nicole (1 episode, 1975)
Dr. Haber (1 episode, 1975)
Police officer (1 episode, 1975)
Rudy (1 episode, 1975)
Police Surgeon (1 episode, 1975)
Vernon (1 episode, 1975)
Young Nurse (1 episode, 1975)
Paramedic (1 episode, 1975)
Plainclothes Cop (1 episode, 1975)
Dulcy (1 episode)
Carol Denton (1 episode)
Kramer (1 episode)
Tom (1 episode)
Marcus (1 episode)
Lamont (1 episode)
Kay Bishop (1 episode)
Nurse (1 episode)
Clara (1 episode)
Ryan (1 episode)
Bartender (1 episode)
Shelley (1 episode)
Dispatcher (1 episode)
Gorman (1 episode)
Officer Allen (1 episode)