The man in charge of filming The Traitors' missions

Spoiler warning: This article contains details of the ongoing series of The Traitors.

"You do get the jitters, the butterflies in your stomach, just before some of them," Mark Drake, The Traitors' mission director, said of capturing action scenes seen by millions.

Ahead of its hotly-anticipated finale, Drake let his wife, BBC Radio Berkshire's Kirsten O'Brien, in on some of the secrets of the show.

"I do all the bits at the castle, when they're running around catching things, and try to make them as big and spectacular and interesting as possible," Drake said.

"I have got about 13 cameras and then I have got a couple of drones as well and a whole host of mini-cams so I'm trying to capture whatever that mission is.

"I'm one cog in a very big team where they come up with the ideas for the missions and how we are going to try to push the story forward.

"So it's not just a case of they do stuff in the castle, then they go outside for a bit, run around and then they come back."

Six people remain on the hit show after Roxy was murdered on Thursday.

Viewers have watched as traitors and faithful were terrified inside and outside of a haunted cabin and found coins at the Fountain of the Faithful.

"[The missions] are all different and that's what makes it fun," Drake said.

"The cabin was particularly fun. I got to play with every horror trick that I could think of and think: 'what can we do? How can we make this play off other horror shows or horror films?' That was really enjoyable.

"Some of the really big ones, [including] the one with the fountain – the Fountain of the Faithful – were really challenging to physically film."

Drake and his team worked hard not to be seen in the vast amount of footage his team filmed.

"I'm out there, I'm out in the field," he said. "I've got all my cameras and they're sending all their signals back to a kind of TV setup.

"I have all the cameras on display on different feeds. I spend so long doing it, it's very complicated... because I need to see it in the moment."

He added: "Our team is phenomenal. The programme is huge and the scale of the programme, the amount of people working on the programme, is massive."

Despite all of that preparation, things do go awry and take longer than might have been anticipated, like when secret traitor Fiona took ages searching for skulls.

Drake recalled that he needed to move cameras out to film most of the other contestants - but that it was complicated by Fiona "still pootling around".

He added: "It's like: 'come on Fiona, surely people are going to realise the fact that you're taking your sweet time?' You had to feel for Reece in his cage. That was rather painful."

He said he has been peppered with questions when people find out he has worked on the show.

The most asked has been: who are the druids? "I can't tell you that," he said. “No comment."

As for the most obvious question - who wins? - he said: "I'm not going to tell you that!"