Personal Call sees James Brent haunted by his dead wife when he receives a mysterious telephone call, seemingly from beyond the grave. Yellow Iris marked Hercule Poirot's debut appearance on radio in which the famous detective is called to the hotel Jardin des Cygnes to solve an old case in which a cold-blooded killer escaped justice and slipped through his fingers. Butter in a Lordly Dish sees eminent prosecution barrister Sir Luke Enderby get his comeuppance in one of Christie's most gruesome and horrifying murders.