`Murder Maps' is a documentary series exploring notorious homicides in modern history. Host Nicholas Day discusses cases in detail and drama reconstructions retell the events as they are believed to have happened. Every episode focuses on a different period, within the London area, examining the forensic evidence that was found on location. The stories that motivated the crimes are revealed as are the investigation techniques used to capture the killers. Gruesome tales, including `The Bermondsey Horror', the Jack the Ripper murders and the conviction of Dr Crippen are discussed.