Strictly: It Takes Two (BBC2, 6.30pm)

THE weekday half-hour sister show to Strictly is back. Radio 2 DJ and former Strictly contestant Zoe Ball returns to host the popular tea time show on Monday, Tuesday and Wednesdays, with Rylan Clark-Neal taking the reins on Thursdays and Fridays. Ian Waite will also return each week with “Waite’s Warm-up” as he analyses the couples in the training rooms, and Gethin Jones returns as roving reporter and will be giving viewers a sneak peek of all the action at rehearsals.

The Sister (STV, 9pm)

HALLOWE’EN may be a bit different on Saturday due to the pandemic. However, ITV is getting us in the mood with the premiere of this creepy psychological thriller across four nights this week. Inspired by Neil Cross’s 2009 novel Burial, it stars Russell Tovey as Nathan, a well-meaning but directionless lost soul who harbours a terrible secret. Nathan now has a new life and is devoted to his wife, Holly (Amrita Acharia), but his world is turned upside down when a face from the past turns up on his doorstep.

Who Do You Think You Are? (BBC1, 9pm)

GAVIN and Stacey creator Ruth Jones is proud of her roots and wants “to share the wonderful characters in Wales”. Ruth finds several in her own family tree, including Welsh mariners who travelled the world. She also learns that her grandfather, Henry Richard Jones, was a leading figure in the Medical Aid Societies of South Wales. His work led him to lobby the minister of health Aneurin Bevan, a fellow Welshman who became known as the father of the NHS.

President Trump: Tweets from the White House (C4, 9pm)

WHILE Franklin D Roosevelt was known for his “fireside talks” and JFK won the presidency partly because he was good on television, Donald Trump is truly America’s first social media leader. He has tweeted tens of thousands of times since moving into the White House, giving the American people unique access to his innermost, unedited thoughts and giving him access to his “base” – without the interference of the traditional media. This is the story of how, whether they have caused controversy or solved intractable foreign policy problems, tweets have changed American politics for ever.