The Killings at Kingfisher Hill

Hercule Poirot is summoned to Kingfisher Hill estate to prove the innocence of Helen, who is accused of murdering her fiancé's brother, Frank Devonport. The request comes with the unusual condition that Poirot must keep his true purpose a secret. During the journey to the estate, a woman on the coach claims she will be murdered if she stays. The trip concludes without incident, but soon after, a body is found with a disturbing note. Poirot must unravel these events to determine if they are connected and uncover the truth behind Frank's death.