As its title implies, `Redrum' works in reverse. The true crime series flips the script of traditional mystery programming by starting the stories at the scene of the crimes and working backward to reveal the killers. Told with the help of interviews with friends and family close to the victim - and sometimes even the killer - each story integrates the interviews with stylised re-creations to show how investigators piece together a case, tracing a series of intersecting events and relationships that unfolded to arrive at the root of the crime.