Patricia Erdmann sits in a living room that is a shrine to her dead son Lee. Pictures of the 37-year-old on holiday, at weddings and with his five children are everywhere. She has an engraved marble memorial to him by her bed. Patricia admits to crying herself to sleep some nights. Lee was drinking in The Wellington pub on Regent Road in Salford, Greater Manchester, in the early hours of Saturday 10 September 2011. He had been laughing and joking with a man at the bar and got up to go to the toilet. The same man shot him in the back when it was turned.