Something terrifying has started happening in Eggerton. People are turning up drained of blood and very, very dead. Have vampire bats started attacking humans? If so, then who's delivering the hammer-blow that finally kills the victims? For Detective Inspector Jack Sears it's a mystery that not even virologist Doctor Christopher Deacon can fathom. But then the police get lucky. Against all the odds one of the victims survives. But strangely enough, that's when things go from bad to worse ...