In Victorian England, a fortune now depends on which of two brothers outlives the other—or can be made to have seemed to do so.
| Directing | Bryan Forbes | Director |
| Writing | Burt Shevelove | Writer |
| Writing | Lloyd Osbourne | Novel |
| Costume & Make-Up | Julie Harris | Costume Design |
| Writing | Robert Louis Stevenson | Novel |
| Writing | Larry Gelbart | Writer |
| Production | Bryan Forbes | Producer |
| Production | Jack Rix | Associate Producer |
| Production | Larry Gelbart | Co-Producer |
| Editing | Alan Osbiston | Editor |
| Production | Burt Shevelove | Co-Producer |
| Crew | Gerry Turpin | Cinematography |
| Sound | John Barry | Music |
| Editing | Ray Thorne | Assistant Editor |
| Directing | Christopher Dryhurst | Assistant Director |
| Costume & Make-Up | Roy Ponting | Wardrobe Master |
| Costume & Make-Up | Basil Newall | Makeup Artist |
| Camera | Michael Sarafian | Assistant Camera |
| Directing | Penny Daniels | Continuity |
| Sound | Bill Daniels | Sound Recordist |
| Sound | Ken Barker | Sound Recordist |
| Costume & Make-Up | Maude Onslow | Hairdresser |
| Camera | Ronnie Taylor | Camera Operator |
| Costume & Make-Up | Laurel Staffell | Wardrobe Master |
| Costume & Make-Up | Paul Rabiger | Makeup Artist |
| Art | Ray Simm | Set Designer |
| Production | Donald Toms | Production Manager |
| Art | George Hill | Construction Manager |
| Sound | Teddy Mason | Sound Editor |
| Sound | Gus Lloyd | Sound Assistant |
| Camera | Ted Lockhart | Grip |
| Camera | George Courtney Ward | Still Photographer |
| Art | George Ball | Props |
| Art | Alfred Waye | Props |
| Production | John L. Hargreaves | Producer's Assistant |
| Art | Peter James | Set Dresser |
| Art | Robert Ellis | Title Designer |
| Camera | Gerry Turpin | Director of Photography |
| Sound | John Barry | Music Arranger |
| Sound | John Barry | Conductor |
