It was after midnight in late May 2001 in quiet Surrey, England. Chris Donovan, his brother, and their friend met up at a local takeaway so they could walk home together - never knowing a chance encounter was about to up-end their lives and send shockwaves through the community. What followed was a painstaking investigation by two relentless detectives to prove culpability, and an extraordinary act of grace by grieving parents who would redefine the meaning of forgiveness.