Boy Detective #3

Dan Tayler, the Boy Detective, takes on a spy ring operating from the sewers beneath New York City when he's enlisted to deliver a decoy package to enemy agents—but the criminals see through the ruse and the chase leads him deep underground. Trapped in a desperate pursuit through the city's maze of tunnels and passages, Dan must outmaneuver cunning operatives who will stop at nothing to silence him and complete their sinister mission.

Eddie Cooper claws his way up from the slums through robbery, murder, and bootlegging during Prohibition, building an empire that lets him play the respectable businessman—flower shop owner, society host, and devoted husband. But his quick cons and cutthroat moves have made enemies among the desperate men around him, and his past finally catches up with him in ways he never saw coming.

Private eye Mike Strong crashes a high-society engagement party and stumbles into murder when the elderly bride-to-be drops dead—but what looks like an accident soon points to something far more sinister involving a matrimonial agency and a calculated scheme. Strong goes undercover to infiltrate the operation and expose the killers before they strike again, uncovering a plot that reaches right back to the Croydon family's tragic loss.