Detective Sergeant James Hathaway is a fictional character from the British television series Lewis. He serves as the right-hand man to Detective Inspector Robert Lewis, assisting in solving complex murder cases in the city of Oxford. Hathaway is known for his intelligence, analytical skills, and a background in philosophy, which often aids in his investigative work. Hathaway is portrayed by actor Laurence Fox and is characterized by his calm demeanor and sharp wit. Throughout the series, he develops a strong professional relationship with Lewis, showcasing a blend of camaraderie and mutual respect as they navigate the challenges of criminal investigations.