PC Matthews was involved in four matters involving residents of Coronation Street. In September 2013, Karl Munro reached the end of the line after torching the Rovers six months earlier, causing a blaze which killed firefighter Toni Griffiths and then murdering Sunita Alahan who he thought was the only other person who knew he was responsible. Craig Tinker however had seen Karl leaving the empty pub on the night of the fire and he began to terrorise the lad. He broke after a few weeks and told his mother, Beth, all that had happened and the police were alerted. At the same time, Dev Alahan had reached his own conclusions and cornered Karl in the pub where a fight broke out between the two men and Karl's new wife, Stella heard his confessions of murder. He held her in the cellar as the poli