The judge who led the case against Britain's most prolific serial killers, Dr Harold Shipman, speculated that his horrific crimes were intrinsically linked to his addictive personality. Unfortunately Shipman was not alone - many other serial killers hae become dangerously hooked on the thrill of the kill and enjoy the suffering of others. MASS KILLERS investigates the men and women addicted to death, as well as the spree kilers who seem apparently normal to everyone who knows them until one day, for no apparent reason, they just snap. The book is dividied into sections on crimes against humanity (including Vlad the Impaler and the Nazi Holocaust), on the rampage (including the Hungerford massacre) and serial killers (including Ted Bundy and Harold Shipman).