Inside the dangerous world of Roger Cook, the TV crusader who took on crooks, killers and conmen despite beatings

HE was the journalist credited with inventing the “doorstepping” interview technique – where you knock at a house and take what you get. Roger Cook’s fearless pursuit of conmen, fraudsters, paedophiles and other crooks — often literally ringing their doorbell and going up close and personal — made him the crusader every investigative reporter aspired...