A murder using Novichok is committed in England. Novichok is the deadliest nerve agent known to man and invented by the Russians. Equally dangerous are the activities of spies who endanger themselves, the countries they spy on, and even on the one they work for if they become double agents. Oleg Shaplinov and his son, Igor, are embroiled in this sort of terrifying nightmare and its investigation. This is the second of Terry Stanton's Detective Inspector Colin Lacey investigations. The first was "No Mayday! No Mayday!"