The Three Stigmata of Palmer Eldritch

On Mars, the harsh climate could make any colonist turn to drugs to escape a dead-end existence. Especially when the drug is Can-D, which translates its users into the idyllic world of a Barbie-esque character named Perky Pat. When the mysterious Palmer Eldritch arrives with a new drug called Chew-Z, he offers a more addictive experience, one that might bring the user closer to God. But in a world where everyone is tripping, no promises can be taken at face value.
The Three Stigmata of Palmer Eldritch is one of Philip K. Dick’s enduring classics, at once a deep character study, a dark mystery, and a tightrope walk along the edge of reality and illusion