9.35pm, BBC One
The amateur sleuth is a well-worn archetype but Lesley Manville inhabits it more persuasively than most in this third and final adaptation of Anthony Horowitz's mystery trilogy. Manville is book editor (and side-hustle detective) Susan Ryeland, who is persuaded to help whip a troubled young author's manuscript into shape. She is drawn into a murder case that spans multiple timelines and circles enticingly back to a tiny coven of occult-obsessed children. Odd and intriguing.
6.15pm, BBC One
It might be harder to pin down who everyone is this season, beyond a few nepo babies and Delta Goodrem, but we're still excited for the first live episode of the series. There's no public vote this week but you can bet on Craig saying something relatively soul-destroying to one of the 15 couples strutting their stuff.
The Space Race in Colour
8pm, Channel 4
9pm, BBC Four
The French (obviously) period drama continues to mix dark intrigue with deadpan absurdity, as accusations and regular violent deaths accumulate in the elegant wake of Marguerite Steinheil (Evelyne Brochu). Could the butler have done it?
10pm, BBC Three
A second series of this animation set in and around Ebbw Vale's grimmest takeaway. Events turn somewhat fantastical – for reasons that aren't entirely clear, Ebbw Vale now has a beach. But are seaside-related accidents going to prove dangerous to Basil's most prolific customer? Happily tasteless, grossout fun.
10pm, Sky One
It has been a patchy return for the British version of SNL so far, but might this be the night it takes off? It's hosted by Amelia Dimoldenberg, the increasingly high-profile YouTuber behind the recently retired web series Chicken Shop Dates, while music comes from Rachel Chinouriri.
Film choice
The Moment, 6.35am, 1.30pm, Sky Cinema Premiere
It's hard to tell whether Charli xcx's mockumentary is a way of summing up her world-exploding "Brat summer" of 2024 or razing it all to the ground. As it counts down to a big arena tour and its accompanying concert film, Aidan Zamiri's tale flips between the musician being overwhelmed by her sudden celebrity and a string of comically terrible Spinal Tap-ish decisions (the Brat credit card for gay people is a highlight). Throughout, Charli does a good job of keeping us guessing as to what's a fact and what's not.
Live sport
Tennis: Laver Cup, 12.45pm, TNT Sports 2 Day two of Team Europe v Team World at the O2 Arena, London.
Uefa Nations League Football: Slovenia v Scotland, 1.45pm, BBC One Scotland v Switzerland is on Tue at 7.30pm on BBC Two.
Prem Rugby Union: Exeter v Gloucester, 2.30pm, TNT Sports 1 Sale v Bristol follows at 5.15pm. Leicester v Saracens is on Sun at 2.30pm on ITV1.
Super League Rugby: Wigan v Wakefield, 5.15pm, BBC Two The second semi-final.
Uefa Nations League Football: England v Spain, 6.45pm, ITV1 Harry Kane leads the World Cup's third-best team against the winners. Czechia v England is on Tue at 7pm on ITV1.