In recent weeks, it has been claimed that John, played by Graeme Hawley, will be driven to desperate measures after fearing that the body of Colin Fishwick will be discovered underneath the Underworld factory.
Photographs obtained by the Daily Mail appear to confirm the shock plot twist, with John and wife Fiz Stape (Jennie McAlpine) pictured on top of a roof with baby daughter Hope.
It is thought that John will conceal himself in the attic of their Weatherfield home, before being caught by wife Fiz, resulting in a chase which sees the unlucky mother knocked down and admitted to hospital.
In the new images, Fiz is seen to be wearing a dressing gown with a bandage on her head, while John is sporting a white doctor's coat.
As Fiz coaxes her troubled husband into handing over their daughter, she cries out as John jumps or falls from the roof of the hospital, before Chesney and a number of police officers run to hold a distressed Fiz back from the edge as she clings onto her daughter.
The dramatic climax marks the end of a shocking year for John after he stole the identity of co-worker Colin, disposed of his body in the Underworld factory when he died during an argument, attack and kill Charlotte Hoyle with a hammer when she threatened to expose his secret, and accidentally kill Colin's mother Joy Fishwick as he tried to apologise for her son's death.
Hawley revealed earlier this year that he would like John to strike again, in order to claim the record for killings on the street.