On scrubland near a destitute South African township, Dr Joseph Bryne and Dr Linden Cullen are being held at gunpoint.
The men kneeling with their hands behind their back are a world away from the sterile wards of Holby City Hospital and probably wishing they were back there again instead of on a dangerous hunt for nurse Faye Morton.
Yes tonight’s Holby City (BBC1 8pm) gets a lot more action-packed in a special episode filmed on location in Cape Town.
The show sees the normally placid Joseph (Luke Roberts) and Linden (Duncan Pow) pair up to rescue Faye (Patsy Kensit), who is being held by thugs on the instructions of her ex-husband Lucas, whilst he takes their son to hospital for a potentially fatal operation.
Confused yet? So is Joseph, Faye’s sometime boyfriend, who knew nothing about her secret son or the existence of yet another ex-husband. But the mystery doesn’t stop him getting on a plane to South Africa.
“Joseph senses there’s a reason behind everything and there must be a rationale for this unexplained business,’’ explains 30-year-old Luke.
“I think he does trust Faye and he already knows she has a chequered past, rather like his own. He sees them as similar souls, so he jumps on board.
“Besides, he is passionate about this woman. I think it’s the first time he’s really engaged those feelings.
“And after all, it’s Patsy Kensit!’’ he laughs. “You’re going to get on that plane aren’t you?’’
Joseph and Linden break into Faye’s husband’s house and find a cleaner locked up who tells them Faye has been taken by men to a local township. The pair set off to find her – looking like action heroes out of a buddy film.
“It was definitely ‘buddy buddy’ all the way,’’ agrees Luke. “I think we did the Lethal Weapon thing BBC style!
“It was a good romp. It’s a yarn episode and it’s quite liberating for us. My character is kind of an anti-hero.
“Although he’s no Indiana Jones, it was quite fun to have the tables turned. And when you’re shooting in Cape Town, you can’t really complain!’’
The South Africa episode is framed with a narrative by Linden, in a confession box, relating the events of the trip to a priest. It soon becomes clear from his voiceover, that he had an ulterior motive in going to find Faye – and is actually Joseph’s love rival.
“Linden has an agenda,’’ says Luke, “but it’s the first time that element surfaces.
“As far as Joseph’s concerned, he’s struggling with his love for Faye, who’s proving to be a slippery character.’’