DUBLIN Murders' lead actors Killian Scott and Sarah Greene have revealed that filming the dark drama left them "broken" and "exhausted".
The pair play detectives Rob Reilly and Cassie Maddox in the BBC thriller, which is set at the turn of the millennium and revolves around two seemingly unconnected killings.
"You do get to the stage where you're exhausted," Killian told The Herald.
"Although that's not the worst place for an actor to be because they're turning off their critical brain and just doing it."
Sarah agreed, adding: "I felt completely satisfied by the work, but I was pretty broken by the end of it. I took two months off!"
The eight-part series is based on Tana French's best-selling Dublin Murder Squad novels and was adapted for the screen by Sarah Phelps.
The show blends the first two novels in the series, In The Woods and The Likeness.
And writer Sarah, who has adapted several Agatha Christie novels into hit BBC dramas, admits shooting the show was gruelling.
"Productions have their own energy, they become their own beast," she said.
"Over eight episodes and seven months, you've taken people who look like normal human beings and broken them into a thousand tiny pieces.
"The theory on this one [was] no-one is allowed to go to bed. We are in this totally immersive world and we end these characters' stories at the end...There's no room to breathe."
The series, which begins tonight on BBC One, sees Rob and Cassie investigating the murder of a young ballerina who is found dead on an ancient stone altar.
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It soon transpires that her killing may be connected to a historic case 20 years before when three children went into the woods and one never came back.
Lead actress Sarah Greene, who plays Cassie, says her character and Killian's character Rob are both connected by demons from their own pasts.
"I think they have a shared guilt of surviving," she explained.
"They both survived traumas in their pasts and that binds them together."
- Dublin Murders starts tonight at 9pm on BBC One and continues tomorrow night.