Under the cover of nightfall, a submarine quietly departs the harbor of Casablanca bound for Belfast, Ireland. The mission is to deliver a new type of selective targeting weapon into the hands of the IRA. Armed with this weapon, the IRA will select and assassinate every prominent Member of Parliament without leaving a trace. Unknown to the IRA, the submarine holds additional secrets. One member of the crew is an undercover British agent, but before the submarine reaches Belfast, the agent will be murdered, and his body will be cast into the open ocean. Upon the discovery of the agent's body,...

This is the fourth in the "Humphrey-Skinner Frog" suspense mystery novel series following 'Leopard Frog', 'Diamond Frog' and 'Tiger Frog'. It features Burton Humphrey, retired Chief Inspector of Scotland Yard and his brilliant research investigator, Penelope Skinner. Two quite unsuspecting elderly Jewish tourists find themselves in London to visit for the final time the place that held safety and the promise for a new life far away from the horrors of the concentration camp of Auschwitz. With a twist of fate that collided with a terrible coincidence, they face one of their most brutal captors...