With their deadly investigation taking them across the world, they make some shocking discoveries and find themselves at the mercy of those who'd rather they stay silent. Will Stone and his partner identify the attackers and make it home with their lives? Following the failed attempt to blow up the Golden Gate Bridge, the President tasks Jeff Stone with uncovering who was behind it. The prime suspect is Iran, whose economy has suffered after the US places sanctions on it.

Jeff Stone, head of the country's top-secret antiterror organisation, flies with a colleague, George, to Panama to investigate two containers loaded with rocket launchers that may be connected to the Golden Gate Bridge attack.