American computer whiz Luke Williams meets elderly Lavinia Fullerton on a London-bound train. She reveals she's discovered the identity of a serial killer in her village and is going to report it to Scotland Yard. When she is murdered after disembarking the train, Williams vows to pursue the case himself.
Unfortunately the movie Murder Is Easy is not yet available on HBO Max.
| Writing | Agatha Christie | Novel |
| Directing | Claude Whatham | Director |
| Production | Stan Margulies | Producer |
| Art | Ian Whittaker | Art Direction |
| Editing | David Newhouse | Editor |
| Costume & Make-Up | Barry Richardson | Hairstylist |
| Costume & Make-Up | Eddie Knight | Makeup Artist |
| Costume & Make-Up | Ernest Gasser | Makeup Artist |
| Camera | Brian Tufano | Director of Photography |
| Production | David L. Wolper | Executive Producer |
| Sound | Gerald Fried | Music |
| Art | Ann Mollo | Set Decoration |
| Costume & Make-Up | Joan Carpenter | Hairstylist |
| Writing | Carmen Culver | Teleplay |
