Collection of BBC dramas centered around complex murder cases. "The Third Voice", directed by Birger Larsen, follows the killing of a Scottish doctor. After his body is found on the riverbank with a stab wound to the heart, the prime suspect in Rafe Carey (Frank Gilhooley)'s murder is his brother-in-law Leo Durridge (Peter McDonald), whom he was with at the time of his death. Leo, however, claims he is innocent and that he witnessed Rafe drowning in the water. In "The Lost Weekend", directed by Paul Wright, wealthy philanthropist Arla Beckman is reported missing. When it is discovered that Arla was having an affair with English aristocrat Dominic Cotterall (Sebastian Armesto), the man-about-town's reputation proceeds him and he becomes the lead suspect in her disappearance. "The Big Bang", directed by Iain Forsyth and Jane Pollard and starring Jessica Barden and Michael Smiley, looks at the cold-blooded murder of an off-duty policeman.