The Replacement ended on BBC One last night but the final we saw could've been quite different.
The three part thriller focused on two women, with Paula Reece revealed as a psychopathic killer trying to steal Ellen Rooney’s life, including her baby and husband.
But The Replacement writer Joe Ahearne has admitted another ending was planned.
"In a very, very, very early version of the story, we flirted with Paula’s daughter being the one who did the deed," he told the Daily Star newspaper. “We discussed that a bit because we thought that could be fun.
“Then the explanation for Paula’s behaviour would be she’s trying to protect her child and she’s fighting for her child.”
Meanwhile, it's been revealed that a second series will NOT be happening despite big viewing figures.
“It’s very much a self-contained drama," Joe said. “I am very much a fan of beginning, middle and end, and quite a lot of drama on telly both here and in America they want it to be all middle."
He told the Radio Times magazine: “They like it to go on forever.
“When I am a viewer I don’t necessarily want to commit 20 hours of myself to something.
"So very few stories really repay that. It’s the commercial imperative of TV, it’s what everyone wants."