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Helena

Detective

Five Little Pigs A Hercule Poirot Mystery
The Murder of Roger Ackroyd
The body in the library a Miss Marple mystery
The mirror crack'd
The Hollow
Nemesis
Death on the Nile
Murder in the Mews
Evil Under the Sun
Elephants Can Remember
One, Two, Buckle My Shoe
Three Act Tragedy
Third Girl
Hallowe'en Party
Cards on the Table
Sad Cypress
Peril at End House
Murder on the Orient Express
The Mysterious Affair at Styles
A murder is announced
Lord Edgware Dies
The ABC Murders
Poirot's Early Cases
Mrs. McGinty's Dead
The Clocks
4.50 from Paddington / A Pocket Full of Rye: Two  BBC Radio 4 Full-Cast Dramatisation
The Mousetrap and Other Plays
Curtain: Poirot's Last Case
Funerals Are Fatal
The Mystery of the Blue Train
Appointment with Death
Dumb Witness
The Labours of Hercules.
The Murder at the Vicarage
Dead Man's Folly
Cat Among the Pigeons
Death In The Clouds
Murder in Mesopotamia
The Big Four
Memoirs Of Sherlock Holmes
The Adventures of Sherlock Holmes
The Sign of Four
A Study in Scarlet
The Return of Sherlock Holmes
The Hound of the Baskervilles
The Seven-Percent Solution