Skyripper

IN FIVE YEARS LITTLE GREEN MEN ARE GOING TO INVADE EARTH

...and the only man who knows is Professor Emil Vlasov. The reason he knows is that he hears voices. He also knows that only the US is capable of turning his ideas into weapons in the time allowed; so even though he's fanatically loyal to his country, the Soviet Union's top physicist wants to give America the plans and formulae for anti-missle lasers that can gut Russian ICBMs like so many trout.

He's crazy of course – at least US Military Intelligence thinks so – but that doesn't matter; they just want those plans. And they're going to get them. Any way they can...