Here are the picks of tonight's TV...

Darkness: Those Who Kill (BBC4, 9pm & 9.45pm)

THE latest foreign drama heading to BBC4 is a Danish tale about a detective and a profiler who, when faced with a series of disappearances and killings, embark on a mission to save the victims which may still be alive. In tonight’s opening double-bill, Jan Michelsen (Kenneth M Christensen) investigates the disappearance of Natasha, a young woman from a Copenhagen suburb, and learns of a similar case from the same neighbourhood 10 years previously. Then, when he discovers human remains in a lake, he suspects a link between the two crimes and brings in Louise Bergstein (Natalie Madueno), an expert on serial killers.

Live International Rugby Union (Channel 4, 2pm)

BOTH Warren Gatland’s Wales and Joe Schmidt’s Ireland will fancy their chances of doing well at the World Cup in Japan over the next few months. Today’s warm-up fixture at the Principality Stadium in Cardiff, as well as next week’s return match at the Aviva Stadium in Dublin, should give rugby fans a better idea who will be going into the tournament as genuine title contenders. Lee McKenzie presents coverage from Cardiff, with analysis from Sam Warburton and Peter Stringer, and commentary by Miles Harrison, Jamie Heaslip and Shane Williams.

Pointless Celebrities (BBC1, 7.45pm)

ALEXANDER Armstrong and Richard Osman invite another selection of famous faces to take part in the unorthodox general knowledge quiz. As always, the challengers are tasked with coming up with the least likely correct answers to a series of questions posed to members of the public. This time, all the contestants come from the world of comedy, as Ralph Ineson, John Thomson, Janine Duvitski, Tony Maudsley, Melvyn Hayes, Stuart McGugan, Vicki Pepperdine and Rosie Cavaliero take part.

WW2: Final Days of the Nazis (C5, 8pm)

IN 1942, a combined British-Canadian force launched a botched raid on the German-occupied harbour. Four thousand Allied lives were lost, once again showing how costly any invasion of France would be. Nevertheless, two years later, Stalin put pressure on the Allies to launch a second a front and take the heat (and freezing cold) off his beleaguered Red Army. What resulted was the D-Day invasion of Normandy.

The second half of tonight’s concluding episode looks at how Hitler, when facing defeat in 1945, ordered his officers to destroy any military and industrial facilities that could have been useful to the enemy. In doing so, he would condemn the German nation to decades of utter desolation.

Casualty (BBC1, 9.20pm)

DUFFY volunteers at a care home and finds out how overlooked some residents can feel, and she decides to express her concerns to Charlie. Meanwhile, David is devastated when his ex-wife Rosalene calls him because their son, Ollie has run away. David finally finds him on a bridge, but Ollie slips off and is rushed into the emergency department where he undergoes a dangerous procedure. Elsewhere, Ethan pulls some strings to try and get Effie on the CF trial, and Archie returns for his first day back at work.