MURDER mystery The Pact has hooked BBC viewers - but one of the stars have warned the ending might annoy you.
The series, branded the 'Welsh Big Little Lies', kicked off on BBC One tonight, and saw four factory workers seemingly kill their boss Jack in a prank gone wrong.
After catching him trying to assault a girl on staff night out, the foursome - Broadchurch and Corrie's Julie Hesmondhalgh, Breaking Bad's Laura Fraser, Ordinary Lies' Heledd Gwyn and Noughts + Crosses' Rakie Ayola - piled the coked-up boss into the back of their car and left him stranded in the woods.
However when they went back to get him, they found him dead - and they vow to keep quiet to protect the others from the police.
At the end of the first episode, someone is on to the girls and what they did, and is now trying to blackmail them.
But Eddie Marsan, who plays Jack's grieving father Arwel, has warned that the ending could prove infuriating to viewers.
He warned Digital Spy: "I think at the end they're going to think, 'Right, what am I going to do now?' There's going to be an element of frustration because it's ending.
"It's like going into a maze. They're going to be turned, go down one alley, and then they're going to be walking around but ultimately, they will find their way out."
The series, which will air on BBC One across this week, is already available in full on iPlayer for anyone who wants to binge watch.
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But for those waiting for tomorrow's episode - there's a lot of questions that need answering.
Most prominently - who killed the cold-hearted boss?
The Pact is available in full on BBC iPlayer and airs on BBC One.