Why Didn't They Ask Evans?
Agatha Christie
 Bobby Jones, the son of the vicar of the Welsh seaside town of Marchbolt, is playing a game of golf with a friend. He chips the ball over a cliff edge and when he goes to look for the ball he sees a man lying unconscious below. Bobby's companion goes for help while Bobby stays with the badly injured man. The man soon dies, but not before briefly regaining consciousness and saying “Why didn’t they ask Evans?” This, and a photograph of a beautiful woman Bobby finds in the man's coat pocket, are the only clues to his identity. While Bobby is waiting with the body another man finds him there. He introduces himself as Roger Bassington-ffrench and offers to stay with the body so Bobby will not be late to play the organ at his father's church. The dead man is identified as Alex Pritchard by his sister, Amelia Cayman. She is said to be the woman in the photograph, and Bobby wonders how such a beautiful girl could become such a coarse older woman. After the inquest, Mrs. Cayman and her husband want to know if Pritchard had any last words. Bobby says that he did not. Later, when talking with his friend "Frankie" – Lady Frances Derwent – Bobby remembers that Pritchard did have last words and writes to the Caymans to tell them. He receives a polite but dismissive reply in the post. Bobby is due to start work with a friend at his garage in London, but receives an unexpected job offer from a firm in Buenos Aires. He rejects the offer. Soon afterwards Bobby falls ill after drinking from a bottle of beer. The beer had been poisoned. The local police can only conclude the poisoning was the work of a madman, but Frankie thinks Bobby was targeted for murder. Bobby is convinced when he sees an old issue of the local paper that had printed the photograph used to find Pritchard's sister. Bobby immediately recognizes that the photo in the paper is not the one he found in the dead man's pocket. He and Frankie realize that Bassington-ffrench must have swapped the photograph while he was alone with the body and that Mrs. Cayman was likely not related to the dead man at all. Bobby and Frankie decide the best way to solve the mystery is to find Bassington-ffrench. They manage to trace him to a house called Merroway Court in Hampshire, owned by his brother Henry and Henry's wife Sylvia. They stage a car accident outside the house with the help of a doctor friend so that Frankie (really uninjured) will be invited to stay at Merroway Court to "recover". Frankie produces a newspaper cutting about the mysterious dead man and Sylvia remarks that he looks like a man she'd met named Alan Carstairs. He was a traveler and big-game hunter who was a friend of John Savage, a millionaire who had killed himself a short time ago after finding out he had terminal cancer. Frankie is also introduced to two neighbours of the Bassington-ffrench’s – Dr Nicholson and his younger wife, Moira. Dr Nicholson runs a local sanatorium and Frankie writes to Bobby and gets him to investigate the establishment. He breaks into the grounds at night and comes across a young girl who says that she is in fear of her life – it is the same girl in the original photograph that Bobby found in the dead man’s pocket. Bobby has to leave the grounds before they are discovered. Several days later, the girl turns up at the local inn where Bobby is staying. She identifies herself to him as Moira Nicholson. She is convinced that her husband is trying to kill her and she admits to knowing Alan Carstairs before her marriage to the doctor. Bobby introduces her to Frankie and it is Moira who suggests that they simply ask Roger if it was he who took the photograph on the body of the dead man. At the next opportunity, Frankie does so and Roger admits that did indeed take the picture, recognising Moira and wanting to avoid scandal for a family friend at the inquest, but he did not put in the photograph of Mrs. Cayman. Interested in the will of the late John Savage, Frankie consults her own family solicitor in London and finds out that by coincidence Carstairs consulted him too. Savage was staying with a Mr. and Mrs. Templeton when he became convinced he had cancer, although one specialist told him it wasn’t the case and he was perfectly well. When he died by suicide, his will left seven hundred thousand pounds to the Templetons who have now gone abroad. Carstairs was also on their trail, suspicious of the will. Bobby is kidnapped and Frankie is lured to his place of confinement – an isolated cottage and finds herself held as well. Their kidnapper is Roger but they manage to turn the tables on him and find Moira in the house but drugged. By the time the police arrive, Roger has escaped. Bobby and Frankie trace the witnesses to the signing of John Savage’s will. They are the former cook and gardener of Mr. and Mrs. Templeton, Mr. Templeton being, in reality, Mr. Cayman. They are told that Gladys, the parlour maid, wasn’t asked to witness the will – made the night before Savage died - and realise that it must have been because she had previously served Savage during his stay (the cook and gardener hadn’t) and she would have realised that it was Roger who was taking his place in the "death-bed" after he forged the will's contents. They also discover that Gladys’ name was Evans, hence the reason for Carstairs’ question – "Why didn't they ask Evans?" Tracing the parlour maid they are amazed to find that she is now the housekeeper at the vicarage of Bobby’s father. This is the reason for Carstairs visit to Wales – his attempt to find Evans when he grew suspicious of Savage's will and it is also the reason for the first attempt on Bobby’s life – the villains couldn’t risk Bobby (who found Carstairs’ body) being in the same house as Evans. Going back to Wales they find Moira who claims she is being followed by Roger and has come to them for help. Frankie though is not taken in and spoils Moira’s attempt to poison their coffee in the quiet country café they are in. Moira was Mrs. Templeton and Roger’s co-conspirator. Attempting to shoot Frankie and Bobby in the café when she is exposed, she is successfully overpowered. Several weeks later, Frankie receives a letter from Roger, posted from South America, in which he confesses his part and Moira's part. Bobby and Frankie realise they are in love with each other and become engaged.