The Secret Trail (Jimmy Rezaire #2)

The plot centers on Jimmy Rezaire, who, after his release from prison, starts a Private Inquiry agency and quickly becomes embroiled in a dangerous mission to uncover a spy ring that has stolen a crucial bomb sight. As he navigates this perilous investigation, he faces additional challenges from his former girlfriend Vivienne and friend Harry Hyslop, who are entangled in a shoplifting scheme, complicating his efforts to thwart the espionage threat.