Trying to remember the name. A talented young musician leaves the stage and locks himself in his changing room. An older woman......his mother who is divorced from his father, is knocked down and killed in the street. It all has to do with the fact that he drowned his disabled sister in her bath. The au pair spent time in prison accused of the murder. Can remember it all but just can't remember the programme.
Someone suggested that.....The old woman who was knocked down was the estranged mother of the musician. She was going to confess about knowing her son was the one who drowned his sister. He lit a fire in a waste bin to lure the au pair out of the bathroom and then went in to drown his disabled younger sister. I'll keep trying.