A Killing on the ExchangeTV Show

Field discovers Mustard's corpse in Tindell's Pond, a nuclear waste dump owned by Charles Tindell. Thorne has learned that Makepeace discovered the illegal practice and reported Tindell, who was later jailed and committed suicide, and suspects the woman in the recording was his wife. Field and Maitland confront a representative of Fane and Browning, a rival company over the fact that Mustard once worked for him and suspect he was hired by them to damage Dinslow Chemicals' chances in the merger bid. Maitland sees an old flame, Lady Bea Tarnigan, at the same hotel, but later Field becomes jealous of Maitland after he meets his mistress Kate MacRenny by chance at the tennis court and becomes interested in her. Thorne locates the widow Alison Tindell and her son Rupert, and learns that Rupert does not have an alibi for the time of Makepeace's death. Little does Thorne realise that his wife Millie plans some investigating of her own that could put her in grave danger.