This programme looks at the importance of establishing the time of death of a murder victim and the difficulties that this can entail. The first case looks at the role of maggots in determining time of death. It starts with the discovery in 1968 of a body in Bracknell woods. We interview a man who, as a child looking for maggots for fishing, came upon a decomposed body. He and a scene of crime police officer recall how the body was ‘alive’ with maggots.