A young man assumes a dead man's identity to claim an inheritance, only to find himself entangled in a web of family secrets and suspicion. Brat Farrar, an orphan, is approached by a mysterious lawyer who offers him a chance at a new life: impersonate Patrick, the deceased son of the wealthy Ashby family, and inherit his fortune. Brat must navigate the complex dynamics of the Ashby household, including Patrick's estranged wife and his manipulative brother, all while maintaining his charade and uncovering the truth behind Patrick's death. The narrative unfolds through Brat's perspective, revealing his growing unease as he realizes the danger he is in.

Josephine Tey's 'Brat Farrar' is widely regarded as a masterclass in suspense and character study within the crime fiction genre. Critics often praise Tey's intricate plotting and her ability to create a palpable sense of unease and psychological depth. The novel is frequently cited for its compelling premise and the nuanced portrayal of its protagonist's struggle with his assumed identity. Readers often highlight the satisfying resolution and the author's distinctive narrative voice, which contributes to the book's enduring appeal.