The year is 1920, and an ambitious doctor meets a nun apparently traumatised by what she witnessed in the Great War. An attempt to restore the woman's sanity results in the uncovering of something very sinister indeed.

A group of adventurers set out from Damascus to visit the legendary Gate of Baghdad, also known as the Gate of Death. When one of the party is found dead, the others look to the seemingly unimpeachable Mr Parker Pyne.

Polina Nazarova is a soprano whose past is dangerously entangled with the present. Given the opportunity to sing her Tosca opposite the arrogant and cruel Andre Breon, it seems that her desire for revenge may prove irresistible.

War-wounded sailor Dickie Carpenter is haunted by strange visitations from a ghostly woman. When his friend Robert tries to solve the mystery, though, he ultimately has to fight his own terrifying battle between love and death.

A man witnesses a murderous attack on a young woman in a mirror - yet when he turns round there is nothing there. Can he prevent a premonition coming true? Basic human loyalty and jealousy are at the fore in this chilling tale.

A foggy night... a lonely country house... and a woman with a gun in her hand quietly surveying the dead body of her husband. It looked like a straightforward case of murder. Or was it? As the ghosts of an old wrong begin to emerge from the past, the case begins to look anything but straightforward... First staged at the Duchess Theatre in London in 1958, this play ran for 604 performances and is as gripping and ingenious as you would expect from the Queen of Crime.

Agatha Christie's first two Poirot novels, narrated with a general-American accent. The Mysterious Affair at Styles: Someone has poisoned wealthy Emily Inglethorp. But who? And how? Everyone suspects Emily's young husband, Alfred...and Alfred seems to be actually trying to get arrested and charged.... The Murder on the Links: Poirot comes to France in response to a desperate plea for help to find his client already murdered - stabbed in the back and lying in an open grave. Brusque, arrogant Inspector Giraud thinks he knows who did it.

Gwenda Reed arrives from New Zealand, travelling ahead of her husband with the task of finding the perfect place to make their base. In the quiet village of Dilmouth, she finds a house with immediate appeal. A few renovations will convert it into her ideal home. Then things get very strange indeed. Wanting porch stairs, Gwenda hires a builder to put them in - only to find some old steps, covered up by bushes.

A BBC Radio 4 full-cast dramatisation starring June Whitfield as Miss Marple. Recuperating from a flying accident, Jerry Burton needs to take a break somewhere peaceful. He and his sister rent a house in the little village of Lymstock, where they know no-one and hope to be able to relax. Their quiet life is shattered, however, by the arrival of an obscene anonymous letter accusing them of impropriety. Jerry refuses to take it seriously and throws it on the fire.

When Alex and Terry set up their own e-commerce company in Philomel Cottage, everything looks rosy until money goes missing from Alex's account. Soon she is questioning her partner - and, indeed, the cottage itself….