Filth by Irvine Welsh

The novel delves into the chaotic and depraved life of a corrupt Edinburgh police officer, who is spiraling into madness due to his addictions, prejudices, and personal demons. As he investigates a brutal murder, his life unravels through a series of grotesque and darkly comedic events, revealing his manipulative and self-destructive nature. The narrative explores themes of moral decay, identity, and the consequences of unchecked power, all while providing a gritty and unflinching portrayal of the protagonist's inner turmoil and societal failures.