Dick at his wildest and strangest - a mystifying but brilliant book - SF: 100 Best Novels In the overcrowded world and cramped space colonies of the late 21st century tedium can be endured through the drug Can-D which enables users to inhabit a shared illusory world. When industrialist Palmer Eldritch returns from an interstellar trip he brings with him a new drug Chew-Z. It is far more potent than Can-D but threatens to plunge the world into a permanent state of drugged illusion controlled by the mysterious Eldritch. Cover illustration: Chris Moore