"I am glad. Because of the nature of the way soaps work, it is very predictable and everyone gets to hear about someone leaving, then it is like, 'Right what is it going to be? A truck? A disease?' And that is boring and so everyone expected that, but I don't think they did expect that he would nearly die, then come back, then not die, so we were trying to be a bit surprising with it," he told What's on TV.
The actor also revealed that he was incredibly impressed by the script for Safe House, in which he plays prison officer David Blackwell, who is seeking refuge with his family in a Lake District safe house after they are targeted by a sinister villain.
"When I first read it I just thought that it was one of the best I had read in ages. It wasn't about procedure and paperwork and it wasn't in a cop shop and it was in this amazing landscape and all the characters had something to reveal," says Jason.
His next project is finishing his first novel, which he has found a challenge.
"It is a story about a painter and his rivalry with his best friend, who is a conceptual artist and very successful, so it is a story about the art world and a story about friendship and rivalry and passion. I love writing, but honing a novel is a beast of thing and has taken me lot longer than it was going to. But I am on the second draft and I can see light at end of tunnel," he smiled.
Watch an interview with Safe House star Jason Merrells, above. Safe House continues on ITV on Monday
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Caren has been a journalist specializing in TV for almost two decades and is a Senior Features Writer for TV Times, TV & Satellite Week and What’s On TV magazines and she also writes for What to Watch.
Over the years, she has spent many a day in a muddy field or an on-set catering bus chatting to numerous stars on location including the likes of Olivia Colman, David Tennant, Suranne Jones, Jamie Dornan, Dame Judi Dench and Sir Derek Jacobi as well as Hollywood actors such as Glenn Close and Kiefer Sutherland.
Caren will happily sit down and watch any kind of telly (well, maybe not sci-fi!), but she particularly loves period dramas like Call the Midwife, Downton Abbey and The Crown and she’s also a big fan of juicy crime thrillers from Line of Duty to Poirot.
In her spare time, Caren enjoys going to the cinema and theatre or curling up with a good book.