TV Guide More4 Thursday

A woman with a weak immune system owing to the radiotherapy she underwent for breast cancer is bitten by her cat, a minor injury that could cause her serious problems. A 71-year-old with terminal cancer is brought in with breathing difficulties and a decision must be made about whether to resuscitate her if her condition worsens. Meanwhile, a 12-year-old translates for his Brazilian grandmother and a five-year-old has her head wound stitched

Another selection of favourite investigations, with Jimmy Doherty heading to South Africa on the trail of sweet piquante peppers and visits the company that has exclusive rights to grow, process and market these colourful chillies. Kate Quilton is in Hawaii to investigate the potentially dangerous levels of mercury in tuna, and Matt Tebbutt finds out why the bags of ice cubes in supermarkets are so crystal clear

The camping critics' penultimate stop is at Mynydd Derwydd, a wild camping site on the edge of Clocaenog Forest in south-west Wales. With 250 acres of stunning scenery to explore, but next to no facilities, campsite owner Llyr tries to win them over with a bushcraft skills workshop, a lamb barbecue and a breakfast delivery of fresh farm produce

In and around Los Alcázares on Spain's Costa Cálida, Craig Rowe pulls out all the stops to find Diane and John from Derbyshire their dream holiday home. They've holidayed in this part of the world many times, and have decided that now is the right time to buy their very own property there. The pair have a maximum budget of £180,000 for Craig to work with

Next to take up the reins in south London is video director Dean, who plans to knock the socks off his guests with his easy-going ways and a tried-and-tested menu. Whether his fiery prawn saganaki will slay his guests' sensitive taste buds and his espresso martini brownies please a tough crowd remains to be seen

In south London, the final host of the week, yoga teacher and masseuse Helen, serves up a Thai-inspired menu and a zen yoga-themed night for her guests. Helen has struggled with the spicy food served thus far, so decides to bring down the heat and serve up some fruity and fragrant dishes instead

The competition begins at the Bowling Green in Chorlton-cum-Hardy, Manchester, where owner Mark Canny hopes his newly refurbished rooms and head for hosting will secure him success. Guests James and Fiona rave about their room, but Martin and Petra find a few furnishing faults. At dinner, Mark gets his guests giggling, while Andrew and Qidi's revelation that they're big hitters in the five-star hotel world sends everyone's expectations sky high. In the morning, Mark's Irish breakfast gratifies the guests, but a fridge feud leaves him far from chilled

The final visit is to Villa Farm Cottage in Thornton Curtis in Lincolnshire, where perfectionist Petra Coates and her partner Martin Littlefield run a tight ship. When the guests arrive, the bathroom tiles take Andrew back to his public swimming pool days and Mark has a moan about a missing en suite. In the morning, the guests are spoilt for choice as Petra provides a German cold meat feast followed by an English breakfast cooked by Martin. However, Andrew and Qidi's feedback about the tiling leaves Martin and Petra planning to hit back on payment day

The B&B owners meet for the last time to find out what they've been paid and settle some scores. Mark from the Bowling Green Hotel questions Martin and Petra about a lack of chairs and then gives Qidi and Andrew's noisy fridge comments a frosty reception

New staff nurse Sophie attends to 22-year-old chef James, who accidentally stabbed himself in the leg while chopping tomatoes. During an eventful shift, she also uses chest compressions to keep alive another patient and helps 54-year-old Bernard, who was out cold for 10 minutes after falling and banging his head against a car. However, when his family arrives, it turns out he had been drinking

Consultant Jacqui must act fast when severely underweight baby Jaziah is rushed into resus with breathing difficulties. In paediatric A&E, it is hoped that 18-month-old Charlie's urine test results will explain why he has been feeling unwell for five days, while 81-year-old Ronald prepares for a CT scan after suffering a suspected stroke that is affecting his speech

Another selection of favourite investigations from the team. Jimmy Doherty hears about a threat to British juniper berries that could mark the end of gin's recent resurgence in popularity, while Kate Quilton delves into the contents of herbal bedtime teas to establish if they really can help people get to sleep more easily. Big oyster fan Matt Tebbutt wonders why he never finds pearls in his seafood platters so sets off for China, where he discovers that pearl production is full of surprises