Callahan's Key: Callahan's Crosstime Saloon Series, Book 9

Nobody blends good science with bad puns as brilliantly as Spider Robinson. Now he’s back with the latest chapter of the Callahan saga – an improbable tale of impending doom, a road trip, space, drugs, and rock ’n’ roll.

The universe in is desperate peril. Due to a cluster of freakish phenomena, the United States’ own defense system has become a doomsday machine, threatening the entire universe. Only one man can save everything-as-we-know-it from annihilation. Unfortunately, he’s not availabl…