Book #10 of the Papa Pontivy series.
It is the late 1940s. The citizens of Moscow distrust everyone, especially each other, so it is no surprise when a visiting Bernard Newman is pulled in for questioning for no apparent reason. Which is why he will be spotted and pulled in to help with investigating a murder at his hotel. The deceased is a British citizen who had worked for years as a propagandist for the Soviet Union in England. Now in Moscow, he is dead and a Russian inspector wants Newman to help solve the case. Newman in turn calls upon Papa Pontivy when it is learned there is a German involvement in the matter.
Marshall back in England is deeply involved in this one investigating the dead man's actions and connections.