Cast & crew
Why Didn't They Ask Evans? (1980)
Directed by John Davies, Tony Wharmby Written by Pat Sandys
Cast
| Roland Davies | Arbuthnot |
| Doris Hare | Rose |
| Lynda La Plante | Trent Roberts |
| Bernard Miles | Thomas |
| John Gielgud | Quincy Jones |
| James Cossins | Henry |
| Eric Porter | Cody Nicholson |
| Madeline Smith | Moira |
| Leigh Lawson | Roger Thornhill |
| Robert Longden | Beadon |
| James Warwick | Bobby |
| Francesca Annis | Derwent |
| Connie Booth | Sylva |
| Joan Hickson | Mrs. Dunn |
Crew
| Mike Humphreys | Director of Photography |
| Joseph Horovitz | Original Music Composer |
| Tony Wharmby | Executive Producer |
| Corinne Rodriguez | Casting |
| Pat Sandys | Writer |
| Agatha Christie | Novel |
| Alan Mills | Sound |
| Ray Helm | Editor |
| Frank Nerini | Production Design |
| Bryan Bagge | Production Design |
| John Davies | Director |
| Jack Williams | Producer |
| Pauline Green | Makeup Artist |
| Penny Lowe | Costume Design |
| Tony Wharmby | Director |