"The Feral Detective" is a novel by Jonathan Lethem, published in 2018. The novel follows the story of Phoebe Siegler, a New York journalist who travels to California in search of her best friend's missing daughter. In her search, she encounters a private detective known as the "feral detective," who takes her on a journey through the wilderness of Southern California. As they navigate the dangers of the desert landscape, they encounter a community of radical activists and a group of people who have retreated from society to live off the grid. The novel explores themes of identity, politics, and the relationship between humans and the natural world. It is known for its quirky characters and unconventional storytelling, and has been praised for its exploration of contemporary issues and its blending of genres.