Trailer
Images
 | Dustin Hoffman as Wally Stanton |
 | Vanessa Redgrave as Agatha Christie |
 | Timothy Dalton as Archie Christie |
 | Helen Morse as Evelyn |
 | Celia Gregory as Nancy Neele |
 | Paul Brooke as John Foster |
 | Carolyn Pickles as Charlotte Fisher |
 | Timothy West as Kenward |
 | Tony Britton as William Collins |
 | Alan Badel as Lord Brackenbury |
 | Robert Longden as Pettelson |
 | Yvonne Gilan as Mrs. Braithwaite |
 | Sandra Voe as Therapist |
| Barry Hart as Supt. MacDonald |
 | David Hargreaves as Sgt. Jarvis |
 | Tim Seely as Capt. Rankin |
 | Christopher Fairbank as Luland |
 | Liz Smith as Flora |
 | Peter Arne as Hotel Manager |
| Hubert Rees as Official at Literary Luncheon |
| Donald Nithsdale as Uncle Jones |
| Jill Summers as Nancy's Aunt |
| Geoff Tomlinson as Hotel Receptionist |
| John Joyce as Hotel Waiter |
| Irene Sutcliffe as Dress Shop Manageress |
| Ann Francis as Jane |
| Hope Johnstone as Royal Baths Clerk |
| John Ludlow as Royal Baths Clerk |
| Ray Gatenby as Official at Literary Luncheon |
| Tommy Hunter as Pierrot |
| Bert Ward as Pierrot |
| Harry Segal as Pierrot |
 | Harry Segall as Hotel Trio |
| Jim Archer as Hotel Trio |
| Reginald Kilbey as Hotel Trio |
| Jonathan Benson as Head Waiter (uncredited) |
| Harry Fielder as Policeman (uncredited) |
 | Tony Haygarth as Man Drinking Tea (uncredited) |
| Juba Kennerley as Gent Watching Billiards (uncredited) |
| Breandán O'Connor as Bellboy (uncredited) |
 | Stan Richards as Hotel Porter (uncredited) |
| Pamela Austin as Pierrot |
| Directing | |
| Michael Apted | Director |
Lighting | |
| Laurie Shane | Gaffer |
Costume & Make-Up | |
| Stephanie Kaye | Hairstylist |
| Wally Schneiderman | Makeup Artist |
Directing | |
| Matthew Binns | Third Assistant Director |
| Gareth Tandy | Third Assistant Director |
| Gary White | Second Assistant Director |
Art | |
| Michael Seirton | Set Dresser |
Sound | |
| Hugh Strain | ADR Mixer |
| Ian Fuller | ADR Editor |
Crew | |
| Derek Piggott | Stunts |
Writing | |
| Kathleen Tynan | Screenplay |
| Arthur Hopcraft | Screenplay |
Production | |
| Jarvis Astaire | Producer |
| Gavrik Losey | Producer |
| Dustin Hoffman | Producer |
Sound | |
| Johnny Mandel | Original Music Composer |
Camera | |
| Vittorio Storaro | Director of Photography |
Editing | |
| Jim Clark | Editor |
Production | |
| Mary Selway | Casting |
Art | |
| Shirley Russell | Production Design |
| Simon Holland | Art Direction |
Costume & Make-Up | |
| Shirley Russell | Costume Design |
Production | |
| Joyce Herlihy | Production Manager |
Directing | |
| Jonathan Benson | Assistant Director |
Writing | |
| Kathleen Tynan | Story |
Sound | |
| Christian Wangler | Sound Mixer |
