The Feral Detective is a novel by Jonathan Lethem. It follows Phoebe Siegler, a resident of New York City who has become disillusioned following the election of Donald Trump. Phoebe travels to Los Angeles to track down her friend Arabella, who has recently disappeared there. Phoebe hires a private detective named Charles Heist, who is also known as the Feral Detective. The novel explores themes of politics, morality, uncertainty, identity, and love.