PICK OF THE WEEK

SATURDAY Strictly Come Dancing (BBC1, 6.35pm) Michael McIntyre’s Big Show (BBC1, 8.10pm)

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The semi-final sees the five remaining couples and their professional partners take to the dancefloor once again to demonstrate their skills. All the contestants face two dances apiece as they try to win the favour of judges Shirley Ballas, Darcey Bussell, Bruno Tonioli and Craig Revel Horwood – and the viewers at home – if they are to be in with a chance of winning. Once the show is over, voting lines are opened and fans are given a chance to have their say over who should make it to the final.

An evening of entertainment, recorded live at London’s Theatre Royal, featuring music by funk and soul legends Nile Rodgers and Chic and chart-topper Paloma Faith. American actor and singer Josh Groban hands over his phone for Celebrity Send to All to have an embarrassing message sent to all his recorded contacts, and Michael makes unsuspecting fans’ dreams come true in Unexpected Star, while also heading to Newport to wake up another member of the public to play The Midnight Gameshow.

The Sinner (BBC4, 9pm)

Following last week’s opening episodes, the hit US whodunit continues with another double bill. The investigation into the stabbing twists in a whole new direction as Detective Ambrose makes a shocking discovery, while Cora begs her husband Mason to bring their toddler Laine to visit her. Then, with Ambrose’s help, Cora tries to recover some of her missing memories, which again lead the detective to a new suspect. Meanwhile, Mason attempts to find answers on his own and suspects JD of involvement in his wife’s predicament.

Snowfall (BBC2, 11pm)

What has happened to Franklin after his arrest in the previous episode? That’s the most pressing question heading into tonight’s season two finale, which is directed by Boyz n the Hood’s John Singleton. It becomes clear that the daily routine in the jail is brutal, with guards refusing to show the detainees any sympathy and the other prisoners not exactly welcoming Franklin. At home he was king, but in the clink he’s a nobody. He is desperate to get out and both Jerome and his lawyer initially don’t think raising bail will be a problem. But will he live long enough to see his plans come to fruition? On the outside, Teddy pulls out all the stops to assist his partners, and Lucia makes a massive sacrifice to save Gustavo’s life.

SUNDAY Doctor Who (BBC1, 6.25pm)

The Doctor and her companions receive nine separate distress calls, all originating from the mysterious planet of Ranskoor Av Kolos, which turns out to have been the site of a terrible battle. As further secrets are uncovered and strange forces gather in the mists, the only clue to what has happened on this world is a commander who has no memory. Mark Addy guest stars alongside Jodie Whittaker in the final episode of her debut series. The Doctor will return for a special episode on New Year’s Day.