PI Robert Brixton is back in Margaret Truman's Allied in Danger, Donald Bain's next installment in the New York Times bestselling Capital Crimes series.

David Portland works security for America's British Embassy in London. His life is upended when his son Trevor dies mysteriously in Nigeria, while employed by a suspicious security/mercenary company known as SureSafe.

One night, Portland sees a man in a bar wearing a bracelet--a family heirloom, which he had given his son--and attacks the man. The information he learns will send Portland down a rabbit-hole of deadly deception--one which he hopes will lead him to the truth about his son's death.

Meanwhile, Robert Brixton, a noted Washington DC-based international investigator, has been hired to look into a fraudulent charity and a criminal warlord in Nigeria. His life and his investigations will soon become intertwined with Portland's probe and that of his estranged, ex-wife, Elizabeth. Their interconnected cases will take Brixton to Nigeria, into that country's Heart of Darkness and on one of the most violent and dangerous journeys of his life.