British science-fiction author J.G. Ballard, who died in 2009, was known for imagining seemingly unlikely scenarios that would later prove ominously prescient. In his final novel, Kingdom Come (Norton, $25), an unemployed ad exec with a ruined marriage investigates the death of his fatherbrought down by a lunatic gunman at a malland uncovers a political conspiracy that has enlisted countless bored suburbanites. Like so much of Ballard's work, it takes an outlandish story line and makes it alarmingly plausible. In fact, the book's plot bears obvious similarities to the birth of the Tea Party. Out March 5.