What’s on TV tonight? Shows to watch on Thursday 19 January from Death in Paradise to Unforgotten

WHAT can't you miss on TV tonight? Our guide to the must-see shows...

Death In Paradise, 9pm, BBC One

It’s all smiles on Saint Marie when Humphrey and Martha enjoy a romantic getaway – even if she keeps calling it a ‘holiday romance’ and he’s clearly started to fall for her.

The detective can’t even enjoy the few days left he has with her as, during dinner on the first night of their break, one of their fellow diners is found stabbed to death.

As there’s a wallet missing, everyone thinks it was a robbery gone wrong.

But Humphrey works out that because there was no way to get into the room where the murder took place from outside the hotel without leaving a trace, one of the guests or hotel staff must have been involved.

And Humphrey’s even more frustrated because, even though he was a key witness, he can’t work out how the killer struck.

You might think he could ask for help from the hotel owner (played by Jason Hughes, right),
but he’s forced to go it alone.

It’s a satisfying plot with a particularly nice twist at the end, and we certainly do love the romance.

Unforgotten, 9pm, ITV

Tensions rise as the investigation into the murder of David Walker continues.

His widowed wife is on edge, his son is lashing out and a woman at the address on his Travelcard is furious to be questioned. Still, our heroes Cassie (Nicola Walker, left) and Sunny (Sanjeev Bhaskar, right) remain calmly determined to solve the case.

If you’re not gripped yet, we promise you will be.

Spy In The Wild, 8pm, BBC1

The ingenious methods used to make cameras into pretend creatures reveal tonight just how clever animals can be.

A spy orangutan sees his pals saw wood, while an undercover squirrel discovers how to cleverly outwit nut thieves, but poor old spy galago is hunted by chimpanzees.

Fascinating and ever so intriguing to watch, as always. We’re hooked.

NEW! Horizon: Clean Eating – The Dirty Truth, 9pm, BBC2

It’s the latest social media sensation, but is ‘clean eating’ really as healthy as we are led to believe?

This fascinating documentary follows Dr Giles Yeo (above) as he meets those associated with the idea, including blogger and Instagram star Ella Mills – aka Deliciously Ella – and tries to get to
the bottom of its various health claims.