Falling

9pm, Channel 4
“May I see your cabbages?” Catholic priest David (Paapa Essiedu) asks devoted nun Anna (Keeley Hawes). “Only if you get me really drunk,” she chuckles. And with that, a forbidden love story starts to unfold. This is Jack Thorne’s new slow-burn drama about the relationship between two people committed to the church and their communities. In the opening episode, when Anna admits her “immortal thoughts of lust” to David, she doesn’t get the response she expected – but it will force her to reconsider her whole life. Does she really want to start again outside the convent? And are her feelings for Hot Priest 2.0 definitely one-sided? Jason Watkins and Niamh Cusack also star. Hollie Richardson

Murder at the Grand Canal: True Crime Presents

9pm, ITV1
In 2015, two friends living on a houseboat in London’s Little Venice heard a thud. Then they saw a suitcase in the water that contained a body. Police launched a murder investigation, which is replayed here – with the insight of forensic pathologist Dr Richard Shepherd and detectives who worked on the case – and led to the identification of Marta Ligman. But who was the perpetrator? HR

Interior Design Masters With Alan Carr

8pm, BBC One
Leeds’s financial district may not scream creative freedom – but it’s where the contestants are let loose. They need to transform studio apartments, with one designer hanging up a very distracting “froufrou thing”. Will Michelle Ogundehin and former winner Lynsey Ford be impressed? HR

Jamie’s Ultimate BBQ

8pm, Channel 4
The final bite of the chef’s summer-ready series is a smoke-kissed sesame chicken burger, served with crunchy slaw and a Korean sauce. Add baba ganoush, minty courgettes and a surf’n’turf mixed grill, and we’re stuffed – in the very best way. HR

Bear Grylls Is Running Wild

9pm, Sky One
“I can’t wait to go off this cliff!” Heavily inked US pop-punker Colson Baker, AKA Machine Gun Kelly (or just MGK these days), turns out to be a self-effacing sweetheart as Bear Grylls drags him around a remote Norwegian forest. Slippery abseiling, chomping on water beetles and celebrating the Grease soundtrack are all on the menu. Graeme Virtue

Half Man

10.40pm, BBC One
After that explosively disquieting beginning, Richard Gadd’s story of male trauma and violence has become bogged down in its characters’ unfathomable motivations. Niall, now the adult version played by Jamie Bell, hears that his old nemesis Ruben (Gadd) is out of prison. Against all discernible reason, he becomes obsessed with a reunion. Jack Seale