in six instalments from 9 June (Volume 206, Number 50) to 14 July 1934 (Volume 207, Number 2) under the title Murder in Three Acts, with illustrations by John La Gatta. This novel is one of two to differ significantly in American editions (the other being The Moving Finger), both hardcover and paperback. The American edition of Three Act Tragedy changes the motive of the killer, but not so significantly as to require adjustment in other chapters of the novel. In 1935 the novel became Christie's first title to sell 10,000 copies in its first year. Adaptations Television A 1986 television film was made under the title Murder in Three Acts, starring Peter Ustinov and Tony Curtis, which relocated the action to Acapulco, replaced the character of Satterthwaite with Hastings, and made Charles Cartwright an American movie star. An adaptation starring David Suchet for Agatha Christie's Poirot was released as the first episode of Season 12 in 2010, with Martin Shaw as Sir Charles Cartwright, Art Malik as Sir Bartholomew Strange, Kimberley Nixon as Egg Lytton Gore, and Tom Wisdom as Oliver Manders. Ashley Pearce, who previously directed Appointment with Death and Mrs McGinty's Dead for the ITV series, also directed this. The adaptation omitted the character of Satterthwaite and changed a number of details but was generally faithful to the plot of the novel. The novel was also adapted as a 2018 episode of the French television series Les Petits Meurtres d'Agatha Christie''. Radio A radio production was made for BBC Radio 4 in 2002, starring John Moffatt as Poirot, Michael Cochrane as Sir Charles, George Cole as Satterthwaite, Beth Chalmers as Hermione Lytton Gore (Egg), the heroine, and Clive Merrison as Sir Bartholomew. The production was broadcast across five weekly episodes on BBC Radio 4 and stays predominantly faithful to the novel, with only very subtle changes being made. Sir Charles travels to the South of France in order to get away from Egg, after initially believing she was in love with Oliver Manders, following a goodnight kiss between the two characters. At the end of the story, once Poirot has revealed the motive and the proof of the first wife, Sir Charles storms out of the room, in order to "choose his exit". It is implied he chooses the quicker option of suicide. A shaken and emotional Egg is then taken home by Manders, leaving Poirot and