Jack P. Shepherd thinks David Platt will stop at nothing to get revenge for his wife's murder - even if it kills him.

The 'Coronation Street' star - who recently signed a new contract with the soap - is plotting revenge against thuggish Macca (Gareth Berliner) because his brother Clayton, who stabbed Kylie Platt earlier this year, is in jail, and the 28-year-old actor has warned his alter ego plans to push things to the limits.

He said: ''When David gets an idea in his head, he will not stop at anything until he has accomplished whatever he needs to or until the point where he is physically unable to do any more...for example dead.''

Upcoming scenes will see David lying in wait to see Macca in hospital, and he is a menacing presence as he waits for the brute to come out of surgery.

Jack told The Sun newspaper: ''David knows exactly where Macca is in the hospital so he heads off there.

''I liked the scenes when David goes with flowers, chocolates and grapes, even telling the ward staff he is here to see his cousin Macca - but it's clear he is up to something sinister.

''David waits all day for Macca to come out of theatre and there's a great shot when Macca is wheeled out.

''The trolley pauses and there is a frame of David staring over an unconscious, oblivious Macca for a few seconds before the trolley is wheeled away again.

''David is there to kill.''

Though David promised Kylie (Paula Lane) on her deathbed that he'd be a good guy and look after their family, he knows there are risks involved in pursuing revenge but doesn't care as he still feels he is fulfilling her wishes.

He said: ''He made a promise that he would look after the kids and bring them up well but he also made a promise to Kylie that he would get revenge on the people who murdered her.

''David believes he is not breaking either promise because once he has killed Macca and he is dead himself, his children will be looked after by [his mother] Gail and [brother] Nick.''