Philip and Martin are two of London's most successful villains. They specialize mainly in drugs, but also deal in guns, stolen cars, credit cards and pretty much everything else that comes their way. And business is booming. Martin drives a top-of-the-range BMW and Philip a slick Merc. When they hit town their wallets are fat with banknotes. If a deal looks good, money's not a problem. Tough, streetwise and professional, they're the kind of men other crooks like to deal with. And that's just the idea, because both Philip and Martin are undercover cops. Revealed for the first time, this is the explosive true story of the Met's covert operations by two men from the front line where any mistake could have been their last.