David Threlfall struggled to understand the 'Passenger' script.
David Threlfall didn't understand Passenger
The 70-year-old actor - who previously played Frank Gallagher on 'Shameless' - plays the boss of a fracking site in ITV's new six part series, which focuses on a small village rocked after a woman goes missing before mysteriously reappearing.
Reflecting on the show's twists and turns, David told the Daily Star newspaper's Hot TV column: "This is a really good, completely indecipherable script.
"Of anything I've ever done, I had no idea what I was involved with, but I knew I was on a good ship sailing somewhere with a really great bunch of people.
"To commission this, there must be something here I just can't see... it just pulls you in. It had something."
David admitted he has become a huge fan of first time writer Andrew Buchan - known for his roles in 'Broadchurch', 'The Fixer' and 'Party Animals' - and even compared the show to Netflix mega hit 'Stranger Things.
He added: "It stands there with 'Stranger Things'.
"I can only bow to Andrew, to think what kind of medication he was on when he wrote it!"
The thriller was first announced two years ago, with ITV expecting big things.
The broadcaster's head of drama Polly Hill commented at the time: "Andrew Buchan’s brilliant scripts take us into a tight-knit Northern community where the Detective Sergeant Riya Ajunwa, an outsider to the town, has to investigate the strange happenings that are genuinely monstrous.
"I’m excited to be making this and working once again with Jane Featherstone and Sister on a drama that can continually surprise an audience in this very original story.”
And Diederick Santer, BritBox International's chief creative office, added: "When I first read Andy’s script, I felt a real shiver of suspense and mystery that I can’t wait to share with our audiences all over the world.”