Spiral
9pm, BBC Four
The sixth series of the French drama concludes with two episodes that dance around a question that’s long lain at the heart of the show: who polices not just the police, but the wider political-judicial system? More prosaically, Tintin is unhappy at being kept out of the loop; Laure’s murder investigation continues, offering Gilou plenty of chances to practise his personal space-encroaching interrogation methods; and Karlsson and Roban face personal crises. Not quite The Wire it would probably like to be, but compelling nonetheless. Jonathan Wright
All Together Now
7.15pm, BBC One
According to Twitter, this new Saturday evening sing-off was peculiarly polarising, with factions either jigging along or displaying a wistful yearning for Noel’s House Party. Tonight, Rob Beckett lures more musical acts towards the 100-strong tonal tribunal, each act hoping to earn a place in the grand finale. Mark Gibbings-Jones
The Voice UK
8pm, ITV
Isn’t it time for the blind auditions to be over? Not quite, as the four coaches – Will.i.am, J-Hud, Tom Jones and Olly Murs – get ready to spin those chairs around the moment a warbling trier catches their trained ear. With spaces on each team filling up, the stakes are increasingly as high as some of the notes. Hannah Verdier
Grand Tours of Scotland’s Lochs
8.30pm, BBC Two
Paul Murton heads off from Lairg on Loch Shin, where the bucolic and galactic clashed more than a billion years ago in the form of the asteroid that carved out the landscape. He concludes by summitting Suilven, a majestic slab of rock jutting out of the west of Sutherland. Ben Arnold
Biggie: The Notorious Life of BIG
9pm, History
More than 20 years later, no one is any wiser as to who murdered Christopher Wallace, AKA Biggie, in LA following an awards after-party. This instead uses strong access – Biggie’s mum; Sean Combs – to put together the more compelling story of his rise from drug dealer to hip-hop icon. John Robinson
Hard Sun
9.30pm, BBC One
The doomsday-clock cop show is never short on grisly killings. But tonight’s murder – a teacher ice-picked to death after a late-night run – feels particularly cruel. (He could totally have skipped that jog!). Hicks and Renko are assigned to the case, which intersects with the Hard Sun conspiracy in a very personal way. Graeme Virtue
Film choice
Albatross, 12.40am, BBC Two
Felicity Jones is Beth, a girl living with her famous-novelist dad and mum at their seaside guesthouse. Their quiet life is interrupted when Beth brings home her new friend, the provocative, wannabe-writer Emelia (Jessica Brown Findlay), who sets about seducing Dad among other acts of rebellion. Paul Howlett
Live sport
Davis Cup Tennis: Spain v Great Britain Day two brings the doubles. 1pm, BBC Two
Six Nations Rugby: Wales v Scotland The opening match from the Principality Stadium, Cardiff. 1.45pm, BBC One
Premier League Football: Arsenal v Everton EPL action from the Emirates. 5pm, BT Sport 1
