E. C. Bentley's Trent's Last Case is one of the defining works of Golden Age detective fiction, hailed as a revolutionary novel that reshaped the genre. First published in 1913, it introduced the journalist-detective Philip Trent and combined a gripping mystery with wit, psychological depth, and an unprecedented twist on the conventions of the whodunit. The story begins with the suspicious death of wealthy financier Sigsbee Manderson, found dead under circumstances that suggest both foul play and baffling contradictions. Called to investigate, Philip Trent applies his charm, intelligence, and keen eye for detail to untangle the puzzle. His inquiries lead him through a web of motives, rivalries, and hidden passions, drawing him into both professional and personal entanglements. What distinguishes Bentley's novel is its bold subversion of detective fiction norms. Trent does not merely solve a puzzle with neat precision—he makes mistakes, falls in love, and reveals his humanity in ways that few fictional detectives had before. The novel challenges the very idea of infallible deduction, offering readers a more nuanced and realistic vision of crime and detection. Praised by contemporaries such as Dorothy L. Sayers and Agatha Christie, Trent's Last Case was recognized as a turning point in mystery literature. Its blend of elegant prose, character insight, and intellectual suspense helped establish a new standard for detective fiction. Far more than a conventional whodunit, Trent's Last Case remains a classic: a witty, innovative, and thought-provoking mystery that continues to intrigue and delight readers over a century later.