Contained in the book .
Jacox is undercover again, this time as a valet. He is hired by a Baron von Enrenburg who is suspected of being a German spy. After learning the Baron is working with a shady Dutch citizen, Jacox is caught snooping and faces certain death until rescued by Ray Raymond. the scheme the spies were involved in was the arming of numerous German citizens in England to take over London when the upcoming invasion starts.