Tyler was released without charge after he was questioned about the murder of Damien's sister Laura.
Damien subsequently kidnapped Tyler, but Tyler escaped.
Now, with Damien receiving treatment for a nervous breakdown, Tyler is turning the screw.
On Sunday, Mairéad is horrified when Tyler offers her a truce - on the condition that she backs him publicly as an innocent man.
"You're going to tell everyone that I've been wronged," he says, "that I am the true victim here."
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