Some real prime Dick right here!!!

An interesting political thriller where a drug can unstick you in time and across the multiverse.
As always the plot of the actual book is less interesting than seeing how PKD uses the tool set of the world.

I always love how his books that show his true stance on narcotics (Harlan Ellison was such a petty liar), and the fact that this book takes great pains to show the effects of fictional and real drugs puts it in league with A Scanner Darkly and Palmer Eldritch