Supergirl
8pm, Sky1
Following the success of Arrow and the Flash, Sky offers up yet another DC Comics spinoff. Having fled Krypton during her youth, Superman’s cousin Kara (Melissa Benoist) has had an all-American upbringing. She’s now working for a media conglomerate and when a mystery woman halts a plane crash … naturally that woman is Kara herself, having ditched her specs and donned a Lycra suit to protect her city. As usual, prepare to suspend all traces of disbelief for this action-packed caper. Hannah J Davies
Class of 92: Out of Their League
9pm, BBC1
Retired Man Utd players Ryan Giggs, Gary and Phil Neville, Paul Scholes and Nicky Butt staged a career reboot in 2014 by buying non-league club Salford City. This two-part documentary follows their first tumultuous season as owners, with the ex-pros attempting to reconcile top-flight ambitions with the more dilapidated world of grassroots football. Performances vary – Giggsy fails to light up the heat map, while Gary puts in the graft – but the famous five seem bland compared with Salford’s outspoken supporters. Graeme Virtue
The Last Kingdom
9pm, BBC2
Notwithstanding its flavour as a PG Game of Thrones, there’s plenty to enjoy in this ongoing Saxon drama. Not least of these is Ian Hart as the priest Beocca, who finds himself offering soul-of-discretion, Thomas Cranmer-like counsel to Alfred and the nobles of Wessex – now facing down an advancing Viking warlord. After the wedding massacre, our wrongly accused hero Uhtred must try to find himself a lord to serve before his reputation gets ahead of him. Norse or Saxon? The unenviable choice is his. Enjoyably tense. John Robinson
Unforgotten
9pm, ITV
Literally every actor in Britain over 50 has had a part in this cold-case drama: Cherie Lunghi, Hannah Gordon, Peter Egan, Tom Courtenay, Gemma Jones. While this has worked wonders in places, we could have done with less of Trevor Eve’s hammily rendered dodgy geezer. Is he supposed to be Alan Sugar? Luckily, the central relationship between Sanjeev Bhaskar and Nicola Walker (worship her) is enough to lock on to for the remaining episodes. Tonight, gangland involvement is suspected. Julia Raeside
Kitchen Impossible with Michel Roux Jr
9pm, Channel 4
Tyro cooks learning from experts might seem an over-populated genre, but this sifts something more interesting into the mix. Michel Roux Jr takes the mentoring mantle, tutoring proteges desperate to display their culinary wiles despite potential employers being unable to see past their disabilities. Offering tutoring and work experience, Roux attempts to help his team enter the industry. With voices seldom heard on TV, it’s a cut above standard fussing about sautés. Mark Gibbings-Jones
Detectorists
10pm, BBC4
Pastoral sitcom Detectorists returns for a second series, with Mackenzie Crook’s hangdog Andy struggling to find both employment and his sense of masculinity following the birth of baby Stan when Becky heads back to work. Toby Jones’s sad-sack Lance is still finding it hard to accept that ex-wife Maggie is gone, but Andy has a plan to get him on the internet dating scene. Meanwhile, a mysterious German stranger arrives at the Danebury metal detecting club, seeking help to find the wreckage of a war plane. Ben Arnold
Rent a Cop
10.30pm, BBC3
The makers of this observational documentary series hit the jackpot with Darlington’s Francis Jones, an ex-boxer and born-again Christian who now runs his own security firm. He’ll take any job; this week he’s pursuing rogue quad bikers on foot to persuade them to mend their ways. He’s assisted by two formidable colleagues, one of whom he gave £3,000 for a boob job to enhance her prospects of canvassing for work for the company, as well as new assistant Pembow, a reformed convict from whom his grandma still hides her purse. David Stubbs
Film choices
King Arthur (Antoine Fuqua, 2004) 10pm, Channel 5
Not so much the legend as the possible origin of the legend, Fuqua’s bloodthirsty epic is set in Britain’s dark ages, where there’s not a shining knight to be seen. Instead, Clive Owen is a resolutely downbeat Arthur, a Roman captain who, with a grungy little band of heroes (Ray Winstone, Mads Mikkelsen and co) plus Keira Knightley’s woady Guinevere, fights to save the land from invading Saxon hordes led by Stellan Skarsgård (currently the hero of BBC1 cop drama River). Paul Howlett
Serpico (Sidney Lumet, 1973) 1.25am, Film4
This is the true story of a New York undercover cop committed to rooting out corruption in his department. Lumet is in his element with subject and setting, pushing along a fierce and gritty thriller on murky backstreets. Al Pacino, following up his Michael Corleone in The Godfather, makes Serpico an unlikely hero – a shambling, mumbling figure in hippy gear and a fascinating study in inner rage and conviction. PH
Today’s best live sport
ATP Tennis: The Swiss Indoors The fourth day from St Jakobshalle in Basel. 1pm, Sky Sports 3
Para-Athletics World Championships The eighth day of competition from Doha. 2pm, More4
World Gymnastics Championships More action from Glasgow, tonight featuring the women’s all-around final. 7pm, BBC1
Championship Football: Leeds United v Blackburn Rovers Troubled Leeds host their rivals from across the Pennines. 7.30pm, Sky Sports 1
