TV tonight: the astonishing story of jailed ‘wellness influencer’ Kat Torres

Like, Follow, Trafficked: Insta’s Fake Guru

11pm, BBC Two
Last year, rags-to-riches Brazilian model and “wellness influencer” Kat Torres was sentenced to eight years in prison for human trafficking and slavery (which she still strongly and passionately denies). Her victims were her followers. This alarming documentary, an investigation by BBC Eye, tells a story of “witchcraft, sexual exploitation and missing women”, with those she exploited and her ex-husband recalling what happened. Then Torres herself offers her side of the story from inside jail. Hollie Richardson

The Repair Shop

8pm, BBC One
The stalwart object restoration show can still, all these years later, come up with a first: a man brings in a likeness of his grandfather carved from soap in a second world war prisoner camp in Thailand. Plus, a scaled-down off-road vehicle made for children and a fez with unusual sentimental value. Jack Seale

The Secret Genius of Modern Life

All cool … Hannah Fry, right, with materials scientist Dr Anna Ploszajski in The Secret Genius of Modern Life. Photograph: Marco Cervi/BBC

8pm, BBC Two
Life without a fridge is unimaginable. The devices have been keeping our food cool for more than 100 years – but how do they work? Prof Hannah Fry investigates the “twisty-turny tube-y bits that create the cold” and the “weirdly warm grill that gets all dusty”, before tracing the history of refrigeration back to a number of explosions. HR

Saving Lives in Cardiff

9pm, BBC Two
Back to Wales’s largest hospital, where surgeons are battling the longest waiting times in history. Father-of-two Terry requires groundbreaking robot technology to remove a tumour at the back of his nose, while martial arts-loving Tyerone is stunned to learn he needs major open-heart surgery. HR

Grand Designs

9pm, Channel 4
What happens when it becomes too hard to manage the Edwardian home you have lived in for 60 years on your own? If you are 82-year-old London widow Kathryn, you come up with a bold plan: build an exact duplicate – with improved accessibility and sustainable features – right next door. Graeme Virtue

Rob Beckett’s Smart TV

9pm, Sky Max
The comedian’s convivial TV quiz welcomes Emmett J Scanlan, currently a taciturn henchman in MobLand, and Himesh Patel of The Franchise fame. They’re joined by panel show pros Kerry Godliman and Carol Vorderman, plus team captains Josh Widdicombe and Alison Hammond. JS

Live sport

Champions League football: Paris Saint-Germain v Aston Villa 7pm, TNT Sports 1. Another quarter-final, first-leg tie.