"Devil in a Blue Dress" is a novel by Walter Mosley, published in 1990. It is set in post-World War II Los Angeles and follows the story of Easy Rawlins, an African American World War II veteran who becomes a private investigator. Easy is hired to find a mysterious woman named Daphne Monet, who is connected to the city's elite and embroiled in a web of crime and deception. The novel explores themes of race, identity, and the struggles of African Americans in the mid-20th century. As Easy navigates the challenges of his environment, he encounters various characters that reflect the complexities of life in a racially divided society. The book is notable for its rich portrayal of the era and its impact on American literature.