Young Broadbrim Fighting an Unknown Power

A boy detective. A scientist who kills without leaving a mark. A power no one can name—yet.

Young Broadbrim has seen his share of dangerous men. But when he takes on the case of a man found dead in his own bathroom—no wound, no poison, no weapon—he faces something that defies every instinct he's ever trusted.

The evidence is almost nothing. A black spot on a dead man's chest. A burned circle on a bathrobe. A scientist across the street with a strange instrument mounted at his window.

Harry Wilson is sixteen years old and utterly certain he's looking at murder.

But Dr. Lanson is no ordinary criminal. He's a man of science who has weaponized knowledge itself—who speaks of killing the way other men speak of mathematics. Cold. Precise. Inevitable. He's already warned Harry to his face that the boy has thirty days to live. And unlike most men who make that kind of threat, Lanson has the means to keep it.

Harry refuses to run. He digs deeper, follows darker leads, and watches the circle of danger close tighter around everyone he's trying to protect.

The killer is brilliant. The method is invisible. And the detective hunting him is just a boy.

Can Young Broadbrim expose an unknown power—before Lanson uses it on him?