Coronation Street fans think they have 'rumbled' DI Costello's new link to the cobbles that's not his colleagues DS Lisa Swain or DC Kit Green.

It would be fair to say that fans of the ITV soap are highly suspicious of the detective inspector, believing he is hiding his role in the demise of Lisa's late wife, Becky.

Depending on which theory you stumble upon, some fans of the ITV soap think Becky could be alive, while others believe that while she's dead, Costello knows more than he's letting on from the time of her death in the line of duty.

Those who have followed the storyline know that Becky was being investigated for corruption before her death, with the details plaguing Lisa for years.

She had confronted her feelings earlier this year, having been forced into attending therapy

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