Coronation Street fans have been told that arsonist Karl Munro (John Michie) could have a new victim in the soap next month.

Warning: spoiler alert!

Radio Times reports that when Karl puts pressure on Stella (Michelle Collins) to marry him, Stella's daughter Leanne (Jane Danson) warns her about accepting the proposal – in front of Karl.

Later, Karl confronts Leanne in the street and warns her that crossing him would be a terrible mistake.

The episode will air on Wednesday May 1.