Food Unwrapped, Channel 4, 8.30pm
MATT Tebbutt investigates concerns about levels of naturally occurring arsenic in baby rice products, Jimmy Doherty examines Marks & Spencer’s claim that it can trace all its beefburgers back to the cow, and Kate Quilton finds out whether a parasite could be hiding in sushi.

Black Earth Rising, BBC2, 9pm
KATE and Florence return to the UK to try to find the final missing item from Eve’s case file against Patrice Ganimana, but someone is ahead of them, stopping at nothing to kill and terrorise their way to this key piece of evidence. Meanwhile, Michael, Alice and Eunice all believe the time has finally come to reveal the truth about a long-buried crime, which will in turn expose Kate to a dark truth about her own past. Thriller by Hugo Black, starring Michaela Coel, John Goodman and Abena Ayivor.

Old People’s Home for 4 Year Olds, Channel 4, 9pm
AT Lark Hill retirement home on the outskirts of Nottingham, the ambitious 12-week experiment bringing the very young and the very old together reaches the halfway mark. The classmates’ confidence is tested with a series of outdoor challenges on a tram journey and a trip to the supermarket, and the older members of the group have health tests to check whether the length of the project is taking its toll. Meanwhile, a post-war themed party is planned.

A Woman Captured: Storyville, BBC4, 10pm
MARISH, a 53-year-old Hungarian woman, has been kept as an unpaid domestic slave for 10 years by a family in her native country. She has been separated from her family and friends as well as her possessions and dignity by a woman called Eta (who is heard off-screen). If there’s too much sugar in her coffee, it can have repercussions for Marish, who has also been forced to take out loans on behalf of Eta’s family. What is remarkable in this powerful documentary is the fact that Bernadett Tuza-Ritter spent two years filming Marish’s plight before the harrowing story reaches its conclusion.