Virgin Media Three Friday

A widow and her grandson are endangered when she discovers the corrupt business dealings of her late husband and son-in-law, while the locals help a visitor on his romantic quest

A murder gives rise to rumours of a communist conspiracy, while Poirot becomes the centre of attention at the Chelsea Flower Show. David Suchet stars

Helen Skelton and expert designer Danny Clarke head to Northamptonshire to help create a low-allergen garden for a couple whose young son is affected by severe allergies

John Torode and Lisa Faulkner return with the culinary show, beginning with demonstrations of how to cook the perfect versions of some of the nation's favourite meals

The Surrey home of single father and keen gardener Rob receives a makeover courtesy of designer Leah Hughes and the team, with his lounge and bedroom given a new lease of life

Alex uncovers some of the country's unknown delights, taking in Capri, Ischia, Salina and Filicudi

A woman with Alzheimer's disease inadvertently commits a series of crimes, while Gina becomes suspicious of two customers staying at the pub

The US Navy's fastest combat ships, which are capable of a turn of speed only possible due to a revolutionary water propulsion system and the chance discovery of a brand new alloy

Alex Polizzi helps a couple who have invested everything into a specialist holiday retreat in the French Pyrenees, only to see relatively few bookings in return

Charity struggles to find the money to ensure Todd keeps her secret, while Cain wants revenge when Moira admits Robert planted the identity documents that got her arrested

A phone call from Melanie elicits a revelation for Ben, Tim shares an update with Will, Summer eyes a fresh start in America, and Sam's grip on reality starts to slip

A secret from Jean's past resurfaces, Dr Weatherill and Sister Brigid deal with a married couple who barely know each other, and Alun finally gets a girlfriend

Morse hunts a multiple murderer who is strangling married women across Oxford, but as the suspect list narrows, he and Thursday find their private lives turned upside down

Nick tries to keep the peace during a feud between neighbours, and Greengrass thinks his luck has changed for the better when he wins first prize in a raffle

With one person dead and another injured on board her flight home, Amy is left seeking answers. Kirsten puts herself in danger by agreeing to meet Sutherland

Sam shows Roy a tracking device he found in his school bag, Cassie gets distracted while childminding, and Kit and Lisa's investigation stalls

Robert investigates a noise in the barn while working on the farm and is attacked from behind and knocked unconscious, while Manpreet lets some news slip

Bradfield diverts the team to carry out surveillance on the Bentleys and uncovers more details about the heist, while Tennison is forced to choose between her career and her family

Scott takes time off work in the wake of Jake's death and is happy to receive a surprise visit from Ashika, but a jealous Sophie tells Ashika he is using her to gain contacts

A series of chilling attacks in Brighton all bear the same signs and Roy Grace has a feeling he has seen the MO before. Return of the crime drama, starring John Simm

Convicted murderer Henry Stoddard's release from prison coincides with a spate of vandalism, and Peggy believes she is due some money from Lord Ashfordly