TV tonight: a thrilling climax for World on Fire

World on Fire

9pm, BBC One

“This operation carries the highest risk,” warns Major Taylor. “I’d think about getting your affairs in order before you leave.” So begins the next phase of Harry’s war as this accomplished drama concludes. Along the way, there is more flirting for Robina and Douglas, a sliver of hope for Jan and Grzegorz and a proposition for Lois. Not to mention a heart-stopping (and ambiguous) climax that makes another season inevitable. And quite right, too: this has been stirring and satisfying Sunday evening sustenance. Phil Harrison

Seven Worlds, One Planet

6.20pm, BBC One

David Attenborough explores South America, the most species-rich continent on the planet. In Patagonia he observes a puma mother attempting to catch prey three times her weight; elsewhere, Andean bears climb to find fruit and swifts make death-defying flights. Ali Catterall

His Dark Materials

8pm, BBC One

With the right balance of darkness and light to push the buttons of its target audience, this adaptation continues to impress. Tonight, it is not looking great for Roger – Ruth Wilson’s Mrs Coulter isn’t quite all she seems. Meanwhile, plans are afoot to trace the missing children and the elusive Gobblers, too. PH

Joni Mitchell 75: A Birthday Celebration

8pm, Sky Arts

The widely adored singer-songwriter whose remarkable career has encompassed everything from Laurel Canyon folk to exploratory jazz turned 75 last year. The range and breadth of the talent assembled to pay tribute at this concert is testimony to her impact. PH

Ant & Dec’s DNA Journey

9pm, ITV

The golden boys of ITV indulge in a little Who Do You Think You Are?-style family history in this two-part special. Ant and Dec have spent two years tracing their origins and now they laugh, cry and meet distant family in Ireland and the US. But the big question is whether they will find out they’re actually related. Hannah Verdier

The Unremembered: Britain’s Forgotten War Heroes

10pm, Channel 4

“What is done for one should be done for all,” was the principle guiding Britain’s treatment of its war dead. In this moving doc, David Lammy wonders why similar respect was not extended to the millions of non-white, Commonwealth soldiers who died. PH

Film choice

The Theory of Everything, 11.05pm, ITV3

Director James Marsh takes the troubled marriage of the great starman, Stephen Hawking, and his wife Jane, and contrasts it with the workings of his mind. The result is a charming portrait of a man overcoming the limitations of his MND, with a beautiful performance from Eddie Redmayne. Paul Howlett

Live sport

Tennis: ATP World Tour Finals 1.50pm, BBC Two. Day one from the O2 in London of the tournament featuring the top eight male players.

Premiership Rugby: Exeter Chiefs v Bristol Bears 2.30pm, BT Sport 2. Fourth-round Premiership match.

Premiership Football: Liverpool v Manchester City 4pm, Sky Sports Main Event. Heavyweight match from Anfield.