How long can you get away with murder?In an idyllic Sussex town, Mr Quinn whispers a secret on his death bed. Hours later the person who cared for Quinn is killed.Mr Quinn's secret sets off events unlike anything Detective Grant and Psychologist Ruby Silver have ever seen.A series of deaths follow as a killer tries to cover their twenty-year trail of murder by drowning.Grant, Silver and the team must track a killer who has been getting away with murder for years. But when treachery, corruption and secrets from the past are used against Sergeant Tom Delaney, the killer turns their attention to one of Grant's own...