- John Fiedler - Professor Jennings
- Sharon Farrell - Gloria Trimble
- Dodie Marshall - Imogene
- Natalie Masters - Nurse
- Michael Conrad - A.C.
- Nicholas Colasanto - Orville
- Richard Deacon - Mr. Bentley
- Cyril Delevanti - Mr. Green
- Butch Patrick - Stevie
- Herbert Rudley - Col. Whitehead
- Richard Reeves - Detective
- Richard Reeves - Picnicker
- Dick Wilson - Patrolman #2
- Paul Sorensen - 1st Policeman
- Len Lesser - Hank
- Len Lesser - Carlo
- John Considine - Raymond
- Penny Santon - Grandmother
- Shelley Morrison - Narita
- Roy Engel - Police Captain
- J. Pat O'Malley - Mr. Harry Burns
- J. Pat O'Malley - Mr. Harry Burns (voice) (uncredited)
- Les Tremayne - Mr. Clary
- Susanne Cramer - Kitty
- Dan Seymour - Fat Man
- Yvonne Craig - Louise
- Parley Baer - Mr. Babcock
- Madge Blake - Mrs. Winthrop
- Madge Blake - Cora Darling
- George Cisar - Patrolman #1
- George Cisar - Policeman
- Don Diamond - Judge Gonzales
- Shannon Farnon - Caroline
- Noam Pitlik - Sam
- Jean Hale - Jeanine Carter
- Simon Oakland - Lt. Murphy
- Linden Chiles - Howard Loomis
- Dal McKennon - Mailman
- Alan Reed - Councilman Jack Gramby
- Pamela Curran - Accomplice
- Norman Alden - Detective Harris
- John Anderson - Capt. Farrow
- Alan Hale Jr. - Omar M. Keck
- Buck Taylor - Bruce Baker
- Milton Frome - Logan
- Gavin MacLeod - Alvin Wannamaker
- Larry D. Mann - Fat Man
- James B. Sikking - Aide
- Cecil Kellaway - Wilbur Canfield
- John Qualen - Matt
- Maurice Marsac - Donati
- Jill Ireland - Zelda
- Peter Brocco - Curator
- Jack Chertok
Les Tremayne interpreta a Mr. Clary en la serie.
Alan Reed interpreta a Councilman Jack Gramby en la serie.
Bill Bixby interpreta a Tim O'Hara en la serie.
Ray Walston interpreta a Uncle Martin en la serie.
Alan Hewitt hace el papel de Det. Bill Brennan.
Pamela Britton interpreta a Mrs. Lorelei Brown en la serie.
Capítulo disponible en las siguientes plataformas:
