Inheriting a detective agency from her ex-policeman boss, a young woman takes on a career as a private detective.

Lilies for the Ladies: In the first episode of the series, detective Sexton Blake investigates the unexplained murders of four wealthy society women. The Sin-Eater: An old friend of Blake's receives a series of cryptic messages written on playing cards. Bluebeard's Keys: Blake is sent a mysterious key in the post, the attached note reads: "This is Bluebeard's first key." Murder on the Portsmouth Road: In one of Britain's earliest surviving drama recordings...

A pocket full of rye. Wealthy businessman Rex Fortescue is found dead with rye grain in his pocket. Miss Marple soon discovers a murderer is dispatching his victims on the basis of the children's nursery rhyme. Murder at the vicarage. The most detested man in a small English village is shot in the head at the vicarage. Only Miss Marple can unravel the tangled web of clues. A Caribbean mystery. On the island of St. Honoré, old Major Palgrave tells...

The body in the library. Who is the strange young blonde lying strangled on the library floor at Gossington Hall? Miss Marple must piece the clues together. A murder is announced. A murder is announced to take place at Little Paddocks. Is it a game? Miss Marple finds out. The mirror crack'd from side to side. When former film star Marina Gregg and her husband throw a benefit party for a local hospital, the day ends in tragedy when a guest has a poisoned...

The moving finger. In the quiet town of Lymstock, a brother and sister receive a harassing letter. They soon discover other town residents have received similar letters and when one recipient commits suicide, Miss Marple helps cast light on the matter. Sleeping murder. When Gwenda Reed finds a house for her and her husband in the town of Dillmouth, she experiences a strange sense of déjà vu. MIss Marple realizes that an unsolved murder is behind...