The Great British Bake Off
8pm, BBC1
It’s only the second episode and already we come to the crunch. It’s biscuit week! Tonight’s signature challenge (these stage titles don’t mean anything, do they?) is biscotti and Paul’s bastard-hard technical challenge is the almost impossible arlettes: French cinnamon-flavoured reverse puff torture for all. They suffer for his sick recreation. The showstopper is a structurally tricky edible box filled with 36 identical biscuits. Will anyone run out of time and try to pass an M&S shortbread tin off as very hard sugar work? Julia Raeside
Are Health Tests Really A Good Idea?
8pm, BBC2
Engaging first-person foray into the cult of the health test, presented by Michael Mosley. Nearly £1bn is spent annually in the UK, privately and through the NHS, looking for indicators of incipient illness, and still more overseas; half of visits paid to US doctors are for check-ups. This appears sensible – prevention being easier than cure – but how much do these tests really tell us that we couldn’t have guessed? Mosley subjects himself to a battery of checks in order to find out. Andrew Mueller
Supervet In The Field
8pm, Channel 4
“Dogs give me so much in my life,” says titular supervet Noel Fitzpatrick, “more than I could ever possibly give them.” Yet Fitzpatrick has given a Great Dane called Sox a bionic spine; not to mention the much-needed shoulder surgery administered to Obi the labrador. In the first of a two-parter, we catch up with the kindly miracle-maker at a dog-lovers festival, where he catches up with some of the UK’s hardest-to-treat pets, given a new lease of life at his celebrated Surrey practice. Ali Catterall
Socrates: Genius Of The Ancient World
9pm, BBC4
Bettany Hughes looks at the role of the fifth-century BC philosopher in shaping modern thought. Socrates was profoundly dedicated to the life of the mind. He was indifferent to personal appearance, to writing his thoughts down, and to the social tumult raging around him – which would ultimately be his undoing. He used his interrogative methods to forge ethical ideas applicable to all humanity, about the sort of lives we should live to attain true happiness. David Stubbs
Witnesses
10pm, Channel 4
As with so many good detective shows, Witnesses makes a lot of the idea that crime is a game of chess where the criminal is thinking several moves ahead. That said, tonight’s episode breaks with the show’s melancholic small-town tone to offer up a bit of old-school crime-scene blood spatter. When a mobile phone is unexpectedly presented to Maisonneuve, the feeling that Kaz Gorbier is running the show is reinforced, but Sandra’s eagle-eyed viewing of evidence on her laptop might offer some promising leads. John Robinson
Jordskott
10pm, ITV Encore
Finale of the blackened Swedish fairytale that has proved, once and for all, that there really are monsters in the woods who want to eat your children. Tonight, Eva returns to Silverhöjd in the hope of saving the lost juveniles once and for all. Will a tree eat her? If nature itself feasts on her like human biltong, will it release its grip on the innocents and return them to their families? What does a girl have to do around Silverhöjd to redeem humanity’s maltreatment of the earth and be home in time for meatballs? JNR
People Just Do Nothing
10pm, BBC3
The series finale of the Brentford-set mockumentary is here, and it’s a day of reckoning for Beats and Grindah as Kurupt FM puts on its first ever garage night. Suitably, it’s being held in an actual garage, otherwise known as Chabuddy’s latest business venture: a horrifically shoddy club called Champagne Steam Rooms. Operating in a world of sweetly modest ambition and near-constant buffoonery, this stealthily charming series manages to capture the tone of life in the midst of barren suburbia uncannily well. Rachel Aroesti
Film choice
The Legend Of Zorro (Martin Campbell, 2005)
4pm, Film4
Antonio Banderas, Catherine Zeta-Jones and director Campbell all return following 1998’s The Mask Of Zorro for this tale of the legendary swashbuckling outlaw revisited. It’s 1850s California, and Banderas’s dashing Don Alejandro de la Vega must once again don his mask and swish his sword in the cause of independence. But his biggest battle is at home, with unhappy Senora Elena de la Vega (Zeta-Jones). Great fun. Paul Howlett
Today’s best live sport
Netball World Cup The qualification-round matches continue at the Allphones Arena in Sydney. 6am, Sky Sports 4
Tennis: Rogers Cup The women’s and men’s tournaments, won in 2014 by Agnieszka Radwanska and Jo-Wilfried Tsonga, continues. 4pm, BT Sport 2; 5.30pm, Sky Sports 3
League Cup Football: Portsmouth v Derby County League Two Pompey take on Championship side Derby for a place in the second round. 7.30pm, Sky Sports 1
