Keeley Hawes and Paapa Essiedu star in Jack Thorne's new slow-burn drama about a forbidden love between a Catholic priest and a devoted nun. In the opening episode, Anna (Hawes) admits her 'immortal thoughts of lust' to David (Essiedu), prompting her to reconsider her life outside the convent. Jason Watkins and Niamh Cusack also feature.
On ITV1 at 9pm, a true-crime story revisits the 2015 murder of Marta Ligman, whose body was found in a suitcase in London's Little Venice. Forensic pathologist Dr Richard Shepherd and detectives provide insight into the investigation that identified the victim and led to the perpetrator.
At 8pm on BBC One, contestants transform studio apartments in Leeds's financial district, with one designer creating a controversial 'froufrou thing'. Judges Michelle Ogundehin and Lynsey Ford assess the results.
Channel 4 at 8pm serves the final episode of a chef's summer series, featuring a smoke-kissed sesame chicken burger with slaw and Korean sauce, plus baba ganoush, minty courgettes and a surf'n'turf mixed grill.
At 9pm on Sky One, Bear Grylls takes US pop-punker Machine Gun Kelly to a remote Norwegian forest for abseiling, eating water beetles and celebrating the Grease soundtrack.
Finally, at 10.40pm on BBC One, Richard Gadd's drama continues as Niall (Jamie Bell) becomes obsessed with reuniting with his old nemesis Ruben (Gadd), who is out of prison.
