"Filth" is a novel by Scottish author Irvine Welsh, published in 1998. The novel delves into the life and psyche of a corrupt detective in Edinburgh named Bruce Robertson, as he engages in self-destructive and manipulative behaviors to achieve his own ends. The title of the novel, "Filth," is also an acronym for "Failed In London, Try Hong Kong."
The book is known for its brutal and realistic style, as well as its deep exploration of themes such as corruption, violence, drug addiction, and mental illness. Throughout the story, readers witness Bruce Robertson's descent into a self-destructive spiral, and his distorted and disoriented perspectives on the world bring to light dark and disturbing aspects of modern society.
"Filth" was adapted into a film in 2013, starring James McAvoy in the lead role, and received mixed reviews, being both praised as a faithful adaptation of the novel and criticized for its controversial content. The novel remains one of Irvine Welsh's best-known works and is appreciated for its provocative approach and its portrayal of the complexities and darkness of human nature.