My church-going sister Joy was brutally murdered in her flat – does gut-wrenching clue prove we KNEW her mystery killer?

LIGHTING a candle, Penny Barnes says a prayer and tries to remember the good times she shared with her beloved sister when they were growing up together. The 72-year-old thinks of how her elder sibling, Joy Hewer, who was ten years her senior, had guided her through childhood, taking her shopping for dresses at the...