In this early SF-novel we get to follow a crippled psychic, mr Jones, with the power (and curse) of predicting the future. Jones organises a mass-movement against some harmless race of alien amoebas, partly serving as a pretext to seize power from the government, partly because of misguided paranoia and partly as a biologistic way to define himself as more "human" than he really is. The novel deals with the psychological aspect between this Jones fellow and his main counterpart, a government official. The novel is quite linear, though, without PKD's usual multifocal perspectives, parallell stories, time paradoxes, breakdown of illusory realities and artificial sentients who challenge our view of what constitutes humanity. If you're not a fan, choose some other novel.