So first off, it's worth mentioning that this story isn't as weird as many other Philip K Dick stories tend to be. It's a little bit more straightforward, in its way - it follows an undercover narcotics officer as he slowly loses touch with reality and sense of self. What's particularly fascinating, though, is the way the language slowly shifts over time to reflect what's going on in the MC's head.

Ultimately, it's a perfect solid book, and much more accessible than most other things Dick has written. And it's miles beyond the movie that was made of it.