| Person | Type | Job | Role(s) |
|---|---|---|---|
 Ann Roth | Crew | Costume & Make-Up | Costume Design |
 Anthony Harvey | Crew | Directing | Director |
 Arthur Conan Doyle | Crew | Writing | Characters |
 Barbara Rittenberg | Crew | Directing | Script Supervisor |
Dick Vorisek | Crew | Sound | Sound Re-Recording Mixer |
Fern Buchner | Crew | Costume & Make-Up | Costume Design |
Frank Caffey | Crew | Production | Associate Producer |
Gerald B. Greenberg | Crew | Editing | Editor |
Herbert F. Mulligan | Crew | Art | Set Decoration |
James Goldman | Crew | Writing | Screenplay |
Jennings Lang | Crew | Production | Producer |
 John Barry | Crew | Sound | Original Music Composer |
John Foreman | Crew | Production | Producer |
John Robert Lloyd | Crew | Art | Production Design |
Louis A. Stroller | Crew | Directing | Assistant Director |
M. James Arnett | Crew | Crew | Stunt Coordinator |
Nathan Boxer | Crew | Sound | Sound Mixer |
 Paul Newman | Crew | Production | Producer |
Romaine Greene | Crew | Costume & Make-Up | Hairstylist |
Sanford Rackow | Crew | Sound | Sound Editor |
 Victor J. Kemper | Crew | Camera | Director of Photography |
Vincent Callaghan | Crew | Costume & Make-Up | Makeup Artist |
Al Nahmias | Crew | Sound | Sound Editor |
Norman I. Cohen | Crew | Directing | Assistant Director |
 Al Lewis | Cast | Actor | Messenger |
 Candice Azzara | Cast | Actress | Teenage Girl (uncredited) |
 Eugene Roche | Cast | Actor | Policeman |
 F. Murray Abraham | Cast | Actor | Clyde (the usher) |
 Frances Fuller | Cast | Actress | Mrs. Bagg |
 George C. Scott | Cast | Actor | Justin Playfair |
 Jack Gilford | Cast | Actor | Wilbur Peabody |
 Jacques Sandulescu | Cast | Actor | Mr. Brown's Driver (uncredited) |
 James Tolkan | Cast | Actor | Mr. Brown |
Jane Hoffman | Cast | Actress | 2nd Telephone Operator |
 Jenny Egan | Cast | Actress | Miss Finch |
 Joanne Woodward | Cast | Actress | Dr. Mildred Watson |
 John McCurry | Cast | Actor | Lieutenant |
 Kitty Winn | Cast | Actress | Grace |
 Lester Rawlins | Cast | Actor | Blevins Playfair |
 Louis Zorich | Cast | Actor | 2nd Sanitation Man |
 M. Emmet Walsh | Cast | Actor | 1st Sanitation Man |
 Matthew Cowles | Cast | Actor | Teenage Boy (uncredited) |
 Michael McGuire | Cast | Actor | Telephone Guard |
 Oliver Clark | Cast | Actor | Mr. Small |
 Paul Benedict | Cast | Actor | Chestnut Man |
 Ralph Clanton | Cast | Actor | Supermarket Manager |
 Ron Weyand | Cast | Actor | Dr. Strauss |
 Rue McClanahan | Cast | Actress | Daisy Playfair |
Staats Cotsworth | Cast | Actor | Winthrop |
 Sudie Bond | Cast | Actress | Maud |
 Ted Beniades | Cast | Actor | Taxi Driver |
 Theresa Merritt | Cast | Actress | Peggy |
Worthington Miner | Cast | Actor | Mr. Bagg |
| Person | Type | Job | Role(s) |
