CORRIE actress Jennie McAlpine admits even SHE thought her character Fiz may have been helping her serial killer husband.
John Stape's evil spree will come to a dramatic end tomorrow as shocked Fiz finally discovers his murderous ways.
She blows the whistle on the psycho after catching him digging up Colin Fishwick's dead body at the Underworld knicker factory.
But the long-suffering Coronation Street character will then find herself hauled in front of cops - who accuse the pair of BOTH being killers.
Jennie, 27, admitted it was hard to believe that anyone could be "so blind" about what Stape, played by Graeme Hawley, 37, had been up to.
She said: "John has embroiled Fiz right in the middle of this.
"The police turn up at the Hoyles' place, but John is not there and they think Fiz is as guilty as him.
"As I was filming it, I remember thinking that they did have a point and I could understand why they thought that.
"Obviously we all know Fiz is innocent, but the police are sceptical. They ask, 'Are you really saying you didn't know your husband did these things? You didn't know he'd buried a man under the factory?' We all know that Fiz has been so naive and blind to it all, but the police certainly don't believe that."
Stape stole heart attack victim Colin's identity to get work as a teacher. Then he killed Charlotte Hoyle and hastened the demise of Colin's mum Joy.
And while Fiz was not involved in the deaths, she is set to be duped into helping Stape cover up his crimes.
In the gripping storyline that will play out all next week, he will try to persuade her that the murders were accidents.
But Jennie revealed that as her character becomes a suspect, residents refuse to believe she is involved. "Fiz has quite a lot of support," she said.
"Everyone says, 'Oh no, not our Fiz! No, never!' I'm like Mother Teresa on the Street."


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