After the vast tundra of his last book, Against the Day, which was a thousand-plus pages, with more than a hundred or so scurrying characters and a shape-shifting plot that went everywhere and nowhere, Thomas Pynchon has decided to give his fan base a break. His seventh novel is practically beach reading. Inherent Vice is a comic-noir detective tale set in Los Angeles around 1970, not long after the Manson murders added their special note to the already twitchy local vibe