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.

Theo is determined to seek happiness with her husband's business rival, Vincent. Having fled London for Paris, however, she soon learns of Richard's financial collapse - and discovers that rather more than just his job is at stake.

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.

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.

Having lost her husband and only child to the war in Afghanistan, a young woman turns to an Irish couple for hope in the form of a miracle. But dark forces are at work, and the price to pay for salvation may be too much to bear.

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….

This is the very first Poirot/Hastings story. Set in 1916, we meet Captain Hastings as he is invalided out of the Great War and goes to convalesce at Styles Court, the family home of his great friend, John Cavendish. By an extraordinary coincidence, billeted in the village is a brilliant little retired detective with an egg-shaped head, who made a considerable impression on the Captain when he was in Belgium. Styles is not a happy household and in the blistering summer heat, tensions mount.

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.

A middle-aged man in search of adventure, Bobby Roberts answers an advert in The Times and is dispatched to Milan, to collect a harmless package from a scientist. However, he very soon gets caught up in a terrifying murder.

When the Cowley sisters employ a carer to look after the ailing Carmela, Morag appears to suit their needs perfectly. But after a spectacular jewel theft on the night of the Hunt Ball, it appears that the perfect carer might be implicated.

A BBC Radio 4 full-cast dramatisation of Agatha Christie’s darkly suspenseful psychological thriller. ‘Some are born to sweet delight/Some are born to endless night’ William Blake Agatha Christie wrote 'Endless Night' in 1967, and it is one of her greatest - and most unusual - novels. Creepy, malevolent and claustrophobic, it is a story about choices, the nature of good and evil, and grim retribution.

A BBC Radio 4 full-cast dramatisation starring June Whitfield as Miss Marple, the deceptively mild spinster sleuth. Wealthy businessman Rex Fortescue is found dead with rye grain in his pocket. His death is followed in quick succession by a woman dying while eating bread and honey, and a maid in her garden. Inspector Neele, in charge of investigating the spate of murders, consults with Miss Marple, who has an interesting and surprising theory to offer.

Father Gorman is called to a dingy rooming house to see a woman who, before she dies, confesses a bizarre tale to him. Leaving the house he is followed but, in the fog, a fatal blow is struck. Nine names on a piece of paper found in the dead priest's shoe is recovered. The clue leads Mark Easterbrook, a historian, to The Pale Horse Inn, home of three women: a psychic, a medium and a witch.

With World War II at an end, Charles Hayward is finally free to marry the woman he loves, Sophia Leonides. However, she refuses - the unexplained death of her grandfather, wealthy businessman Aristide Leonides, draws her back to the suffocating environment of her family home. Charles follows, but his arrival coincides with the discovery that Aristide’s death was murder. The ensuing investigation drags Charles into the dark heart of the family, and its deadly secrets and dangers.

A Radio 4 full-cast dramatisation starring June Whitfield as the deceptively mild Miss Marple with Ian Lavender, Joan Sims and Susannah Harker. Elspeth McGillicuddy is down from Scotland for a holiday and boards the 4:50 train from Paddington station to visit her friend, Miss Marple. During the journey, another train pulls alongside, and through the window Mrs McGillicuddy witnesses a tall, dark man strangling a blonde woman. She reports what she has seen, yet no one takes any notice.