TV Guide ITV3 Tuesday

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Weatherill treats a schoolgirl whose crush on a teacher has spiralled out of control, while Ormerod and Ellis launch a daring cliff rescue when a family picnic goes awry. Jack and Alun use a map to hunt for buried treasure underneath the hospital, and an old friend of Matron is taken ill. Sixties-set medical drama, starring Amy Robbins, Robert Daws, Neil McDermott and Wendy Craig

Eli demands half of Lily's cannabis to sell even though she protests that it's for medicinal purposes. Pollard takes Val to choose a ring but switches the price tags on the jewellery.

Louisa and Martin head to London for Martin to present his research paper and Janice is looking after the children - but things don't go smoothly when Penhale tries to help. Martin also has a few hiccups along the way, including an unexpected proposition or two

Continuing the final series of the hospital drama after a two-year break. Susie Dixon's head is turned by a rich playboy, with devastating consequences for Mrs Middleditch when the negligent nurse administers the wrong blood during a transfusion. Ormerod is called out by the coastguard to rescue a grieving widow who has got into difficulty on her yacht, and Jack and Alun find themselves looking after a horse after it tramples its owner. Robert Daws, Sarah Beck Mather, Susan Hampshire and Gareth Hale star

PC Steve Crane takes an urgent phone call, and is shocked to discover Peter Pyke's warehouse has gone up in smoke. It soon emerges that the owner's wife had spent time behind bars for fraud, and her husband is reluctant to answer questions - leading Merton to suspect the blaze was deliberate. Meanwhile, Vernon moves into his new mansion, but has trouble keeping up with his well-to-do neighbours. Rural drama, starring James Carlton, Duncan Bell and Geoffrey Hughes

Liz Merrick faces a trying time when one of her patients misses an appointment to discuss medication, and subsequently ends up charged with drink-driving, while Vernon's pal David is kidnapped and held to ransom. Merton is delighted Jenny has agreed to marry him, and Bellamy finds out that Gina is carrying his baby. Rural drama, starring Aislin McGuckin, Geoffrey Hughes and Duncan Bell

Tom and Sybbie return to Downton, but the peace is disrupted by an unexpected visit from an old friend. Baxter is faced with a dilemma after an encounter with Sergeant Willis, while Thomas struggles to fill Carson's shoes. Anna goes to London with Mary to deal with a crisis, while her secrets seem likely to be exposed. Daisy is not happy with Cora, and Mary has an admirer

The news of Martin's Imperial College job offer goes flying through the village, but the Ellinghams are yet to make a decision. Caitlin blames Bert for the flooded pub cellar, and an emergency on the rocks helps Morwenna make some important decisions

An old friend of Merton is sent from CID to help track down a bank robber, and he agrees to be best man at the wedding, while Jenny's disgraced brother Steve tries to patch things up with his sister before she ties the knot. Events conspire to jeopardise the special day and stop the happy couple making it to the church on time. Duncan Bell, Sarah Tansey, Mark Jordon and Tricia Penrose star

Part one of two. The green-fingered amateur sleuths are drawn into another mystery when a barrister employing them to spruce up his garden discovers his cousin has been drowned, only for the man to be spotted alive and well a few days later. Felicity Kendal and Pam Ferris star

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