A federal research scientist has gone AWOL - and with him, a microscopic weapon with grim destructive capabilities. The Piranha Molecule is the ultimate nanotechnology, a man-made organism that eats human bone. Virulent death made to order, it's also about to be sold to the highest bidder: the underworld's most elusive broker of military secrets.

Keeping this biological power from falling into the wrong hands is Mack Bolan's paramount objective in a double-barreled mission that includes taking down a powerful distributor of wholesale death. The Oregon coastline becomes a battleground, as enemy guns retaliate against Bolan's deadly offensive.

Like the deadly plague he must contain, the Executioner is on a feeding frenzy.