There is no such thing as the perfect crime. Yet within these pages are thirteen twentieth-century murders whose perpetrators have - so far - escaped justice. Some may still be alive, cold cases awaiting new forensic leads but others have taken their chilling secrets to the grave.Read about the strange theatrical vagrant found brutally murdered in a brick works. Also about the unfortunate girl strangled to death in a derelict building at Christmas; a taxi driver killed by his passenger on a lonely road; a police officers girl friend who was sexually assaulted and murdered on moorland; the dreadful killing of a servant girl; two men shot dead on a quiet highway; the discovery of mysterious and suspicious skeletal remains; and, not least, the callous murderers who allowed innocent men to be stand trial. Famous modern cases are also explored, based on new research. The Barbara Mayo murder is still in the memory of many Derbyshire people as is the Stephen Downing miscarriage of justice. A compelling read for anyone interested in true crime.