Three U.S. Presidents are assassinated over the space of six months, an opportune missile strike by North Korea obliterates San Francisco, Mexico repudiates the Treaty of Guadalupe Hidalgo, Russia invades Alaska "to protect Russian interests in the Trans-Bering region," Cuba begins to push up the Florida peninsula... a catastrophic chain of events precipitated by a mild-mannered bassist on a jog - all because he buys the wrong Beatles album on his...