A dark and highly original psychological thriller by Mark Allen Smith. The novel introduces Geiger, a professional "information retrieval" specialist with an extraordinary ability to detect lies. Known for his strict personal code and mysterious past, Geiger's life takes a dangerous turn when he is asked to interrogate a twelve-year-old boy—something he refuses to do. Instead, he decides to protect the child, setting off a chain of events that forces him to confront both ruthless enemies and the secrets of his own past.

Combining suspense, psychological depth, and a uniquely complex protagonist, The Inquisitor is the first novel in the acclaimed Geiger series and is known for its tense atmosphere and unexpected emotional resonance.