BODY OF EVIDENCE

Sat, 9pm, BBC4 (box set, iplayer)

Welsh crime drama Hidden is back for a gripping third and final season this week, with Sian Reese-williams reprising her role as Snowdonia cop DCI Cadi John.

As the six-part series returns, we find Cadi interviewing for a big promotion and facing a stressful house move. But she soon takes on a shocking new case when she receives a call from police colleague DS Owen Vaughan (Sion Alun Davies) to say that a body of a farmer has been discovered in a stream.

As Cadi breaks the news to the victim’s wife, she discovers that he had a complex home life, and her investigation leads her to brothers Sion and Glyn Thomas. How are they linked to the crime?

MORAL DILEMMA

‘More than ever, this series will make you ask: “How far would you go to protect your blood, your family and their future?”’ says Reese-williams. ‘We also see Cadi’s personal demons finally catching up with her. Her personal and professional lives collide and the story tugs on your heartstrings.’

Reese-williams admits that she will be sad to say goodbye to the series, which has also been shown in a Welsh-language version, called Craith, on S4C.

FINAL CURTAIN

‘It is a bittersweet moment for me,’ she says. ‘I would have happily shot two more seasons, but all good things must end and they wanted this to be a three-part story.’ Because of COVID-19 restrictions, the final wrap party was a somewhat muted affair, but the cast and crew celebrated as best they could.

‘There were restrictions at the time, so you could only have 30 people indoors in Wales, which meant no party. We finished filming at 4.45am, so we had champagne in the trailers and then went home to bed,’ says Reese-williams, 40, who took a couple of souvenirs from the set to remind her of her role.

‘I took Cadi’s police badge, and her boots, which I don’t think I’ll ever wear because they gave me sciatica. I took more than I probably should have, but it’s memorabilia I will never part with.’