Duncan MacLaughlin was an elite officer at London's New Scotland Yard. The best of the best.

In this explosive book, he breaks the code of silence among senior detectives and undercover agents to reveal the brutal, stark truth of life on the front-line of the war on crime. Even with training in covert techniques from the SAS he walked a dangerous line, with his life in constant danger.

The legendary cases he was involved with include the investigation of Kenneth Noye, the pursuit of kidnap victim Stephanie Slater and the slaying of PC Keith Blakelock. He also infiltrated countless global drugs cartels, bringing their terrifying bosses to justice.

With humour, insider insight, and non-stop drama, The Filth is a roller-coaster read that takes you straight into the heart of one of the toughest police jobs in the world. Filled with gritty slang and investigative detail that only an ex-copper could reveal, MacLaughlin's story is a riveting insight into the world of serious crime that is both thrilling and frightening.