The famous Philip K. Dick wrote some amazing books, but in his later years, penned a few stinkers. Fortunately, Ubik is one of the good ones. It starts out dystopian (the door to one’s apartment requires coins to open and close every single time) and quickly gets very weird, as characters become unsure of what time they’re in, or even how alive they are. It’s bizarre fun.
A group of telepaths and telepath-blockers are bombed during a trip to the moon. They survive and return to Earth, but reality starts to flex and bend in baffling ways.