is arrested on his and Eileen's wedding day in December 2003, which occurs on the same day as Roy's funeral. After spending several months in prison, he returns after being acquitted at his trial in June 2004. He returns to discover Lucy murdering Mike in order to protect Eileen and helps them to dump Mike's body at a footbridge. Pete, however, discovers Eileen's true colors when her enemy Trish Wallace (Gabrielle Glaister) provides him with the tape of Eileen confessing to framing him for arson, which culminates in Pete throwing Eileen in the River Thames on their first wedding anniversary, after playing the tape back to her. After a brief fling with Katie Williams (Robyn Page), Pete and Eileen realize they love each other and reunite. In summer 2005, Trish returns heavily pregnant with Pete's baby, which delights him as he had always wanted a baby with Eileen but Eileen had suffered several miscarriages. She has a son, Thomas, but on his christening in September 2005, Trish appears upstairs at the pub with a gun and holds Pete, Eileen and Katie hostage. Pete manages to wrestle the gun away from Trish and shoots her with it. Worse is to come when S019 officers storm the pub and order Pete to drop the gun. After an emotional moment with Eileen, Pete takes a shot at the police and is shot dead by the armed officers. In his will, Pete leaves nothing to Eileen but gives everything to his two sons, Davie and Thomas. To repay Pete for this, Eileen flushes his ashes down the toilet. A reporter from Soaplife observed that "nearly every woman who walks into this soap seems to walk into his arms – and is soon made to regret it". A Soaplife writer said "Charlotte and Pete's relationship is proving more elastic than a pair of Cat's leopard-skin leggings. But, unlike the aforementioned garment, it seems to be holding up very well, despite much outside interference." Beth Hart from Digital Spy believed that Pete had met his match in Charlotte because she kept him "on his toes" since they met. Hart later branded him "Charnham's arch manipulator". Soaplife's Di Hollingsworth said "Pete Callan's a cunning, devious charmer who manages to smile that evil smile of his even when he's delivering the nastiest threat imaginable. Women don't seem able to resist falling at his feet." The writer later opined