Unneutral Murder (an Amos Lee Mappin mystery)

Set during WWII, a criminologist and his assistant journey to Portugal to distribute a secret code for the Allies while aiding in the escape of Germans from Nazi rule. As they navigate the challenges posed by the Gestapo's surveillance and the Portuguese authorities' neutrality, they also confront a local murder investigation. Mappin must build a case against the killers while balancing his covert operations to help those resisting the regime. This gripping narrative blends espionage and moral dilemmas, reflecting the complexities of war.