The offer of a substantial reward inspires Hetty to find the bright spark behind a spate of arson attacks, and she begins by investigating the activities of a neighbour's foster daughter whose absences from home coincide with the fires. Housewife-detective series, starring Patricia Routledge, with Derek Benfield and Dominic Monaghan

Pearl investigates when a mother takes her daughter out for a boat ride against her husband's wishes and the pair need rescuing after the vessel is sabotaged

Sister Reginald's incorrigible brother Alfie Lynch, a habitual thief, turns up at the nunnery seeking help. He is put up at Mrs Clams's guest house. At an art exhibition in the local gallery, egocentric artist Gerry Ardwell features himself as the main exhibit. The next morning, Ardwell is found dead, bludgeoned by a brass statue, while a valuable painting has been stolen. Alfie Lynch is missing and DI Gillespie's main suspect. Sister Reginald pleads with Sister Boniface to find the real culprit, a task made harder when the painting is found in Lynch's room and other suspects have alibis

Tracey is torn between duty to her husband and love for her sister and has to decide whether blood is thicker than water. Comedy, starring Pauline Quirke, Linda Robson and Lesley Joseph

Carver claims to be clean and sober, but his colleagues have their doubts

George is torn between two women who both claim to be the mother of the same boy, leading to the revelation of a shocking secret. Vivien refuses Jimmi's offer of help when he urges her to talk to someone about what has happened. Meanwhile, Daniel and Melody find themselves in a compromising position

Nick treats a man attacked by his wife for being unfaithful. Melody worries about what happened between Daniel and herself, and Vivien's attempt to take her driving test goes horribly wrong when she begins to feel claustrophobic in the car

Mickie's midwife mother brings a home birth patient on to the ward, but they find working together difficult. After a gruelling day, Donna doesn't help matters by providing her friend with pills to cheer her up. Carlos makes a shocking discovery about Tricia, while Zubin and Jess try to be just good friends - with little success

Nita tries to run away and joins a woman fleeing to Scarborough with her brother, but her luck takes a turn for the worse when it emerges the pair are being pursued by a man they robbed. Jay feels stressed after the cancer scare and receives an unwelcome visit from Maryam, who he realises will need a carer, while Lenny and Mads deal with an unlikely bomber. Medical drama, guest starring Helen Latham (Footballers' Wives), with Holly Earl and Lucy Gaskell

Carver claims to be clean and sober, but his colleagues have their doubts

Zainab takes drastic measures to cut Syed out of her life. Ronnie finds a bit of goodness in her heart and Ian's plans are thwarted when he receives bad news from the bank

Phil is panicked as Louise goes missing. Danny has a wicked plan to take Roxy for all she is worth, and Masood stands up for the most important thing in his life

James and Siegfried face a dilemma when an old acquaintance appears to be stealing from them - and to make matters worse, their friend's dog is accused of killing sheep. Guest starring James Ellis (Z Cars), with Christopher Timothy and Robert Hardy

Jack and Vanessa's wedding day approaches, and it becomes clear the bride-to-be's brother is a con artist. Meanwhile, Abby is quite happy to accept Sir Edward's money

The detectives find themselves swamped with work after their recent success. Hetty turns her attention to a troubled village, while Robert and Geoffrey embark on a case of their own. Private eye drama based on the novel by David Cook, starring Patricia Routledge and Derek Benfield

While reseaching her book on prisons, Dorien meets an incarcerated Chris on a visit to the Isle of Wight, and is promptly taken in by his criticisms of Sharon as a bad wife. Comedy, starring Lesley Joseph, Pauline Quirke and Linda Robson