Following three shark attacks in two years just metres from a beach in the Red Sea vacation resort of Hurghada, Egypt, this documentary investigates the recent shift in shark behaviour and whether human activity and climate change could be the causes. Professor Gavin Naylor of the University of Florida looks back to the evolution of sharks for answers while Dr Dean Grubbs of Florida State University gets hands on, catching sharks to study and better understand their movements. Dr Laura Ryan, of Macquarie University, explains her research into a possible case of mistaken identity in which the sharks are mistaking humans for their preferred prey of seals.