Horizon: A Week Without Lying – The Honesty Experiment
9pm, BBC Two
What would life be like in a world where we couldn’t lie? Find out as pioneering scientists rig three participants – a priest, an advertising executive and a YouTuber – with technology that makes it impossible for them to lie undetected and challenge them to live for a week without telling a single fib. The key to this bold experiment is the casting – and it turns out to be ideal. While observing the trio’s behaviour, psychologists point out prosocial and positive sides to deception. Mike Bradley
Upstart Crow
8.30pm, BBC Two
Ousted from its post-watershed slot – but no less ribald for it – the Elizabethan spoof returns for a third season with an opening episode that reminds us why we enjoyed it so much in the first place. Bruised by the denunciation of his new play as “A Midsummer Night’s Snooze”, Will goes after a magical solution. MB
Orangutan Jungle School
8pm, Channel 4
As the jungle school journey comes to a close (couldn’t it have hung around a bit longer with such a winning cast?), the candidates for release are ready to go back into the wild. Now the cycle begins again, as vets head off to rescue a newly orphaned baby orangutan from a remote village in Borneo. MB
Britain’s Lost Masterpieces
9pm, BBC Four
In tonight’s final episode, the art historian Bendor Grosvenor travels to Petworth House in West Sussex. He unearths a portrait credited to Rubens that he suspects may have been painted by Anthony van Dyck, as well as what may be an original Titian, despite the wonky hands. David Stubbs
The History of Comedy
9pm, Sky Arts
The series zooming back and forth through key moments in comedy history returns for a second season. As before, it feels a bit unfocused: this episode covers themes including gentle family humour, animation and boundary-pushing sexual material without ever establishing a clear through-line. Phil Harrison
Hang Ups
10pm, Channel 4
As the black comedy continues, Stephen Mangan’s beleaguered therapist takes more calls between pretending to have a vasectomy and accidently reversing over a dog in a parking lot. His own therapist (Richard E Grant) may be having a breakdown, while a client admits to something very bad indeed. Ali Catterall
Film choice
Lost in Paris (Dominique Abel and Fiona Gordon, 2016), 10.10pm, Sky Cinema Premiere
Gawky Canadian Fiona (Fiona Gordon) answers a cry for help from aged Auntie Martha (a fine swansong from Emmanuelle Riva) and heads to Paris for a pratfalling romantic encounter with rogue-of-the-road Dom (Dominique Abel). A celebration of French comedy, suffused with the spirit of Jacques Tati. Paul Howlett
Live sport
New Zealand rugby union: Counties Manukau v Taranaki 8.30am, Sky Sports Main Event. Live coverage of the National Provincial Championship clash.
Cycling: Vuelta a España 1.30pm, Eurosport 1. Stage five, a 188.7km (117.3-mile) route from Granada to Roquetas de Mar.
League Cup football: Nottingham Forest v Newcastle 7.30pm, Sky Sports Main Event. Can Forest spring an upset?
