For decades, Mazher Mahmood built a career at British tabloids by posing as a wealthy Arab sheikh, luring celebrities and public figures into compromising situations before splashing the results across front pages. This BBC investigation examines how the disguise worked, why so many marks fell for it, and what happened to the people whose lives were upended by his stings, from drug busts to entrapment allegations that later collapsed in court. Interviews and news archive trace Mahmood's rise as a self-styled crusading journalist to the point where his methods came under legal scrutiny, including cases where convictions secured through his sting operations were overturned. The film weighs the tabloid justification, that deception exposes real wrongdoing, against mounting evidence that Mahmood manufactured crimes rather than uncovered them. It is a study of a single, unusually effective piece of journalistic theater and the damage it left behind once the sheikh disguise came off for good.