This true crime collection really is a collection of some of the very worst crimes to have been committed in the last 50 odd years. I found the stories enthralling but very disturbing to think that one human being could visit such horrors on another especially when those others are your own children. Harold Shipman will go down in history as being the very worst of killers if for no other reason than he betrayed his Hippocratic Oath. The Colombian killers are truly horrific and the real number of their victims will probably never been known, the same can be said for Fred and Rose West as not all their victims were buried beneath 25 Cromwell Street, Gloucester and perhaps this couple exhibit the very worst in human behaviour and just how much their behaviour owed to their nature as against nurture is a very debatable issue. I find it very difficult to believe that nurture can be so overwhelmingly strong that its effect is to completely overwhelm all natural instincts to protect and cherish a life you have given birth to. Perhaps the Kurim case was the most disturbing of them all, how a perfectly normal mother can, over a very short period of time be effectively manipulated and brainwashed into causing such psychological and physical harm to her own children and this case is different from the West's as Rose West often initiated the physical harm and even death, she didn't need any prompting or assistance from Fred who could well be likened to Macbeth and Lady Macbeth in that the couples together were a folie a deux. The books are all well researched and well written and I would have given the collection a 5 star rating except for the amount of typos the author needs to change his proof reader.