Substance D is the most toxic drug that has ever struck the streets of LA. This drug at first destroys the link between two hemispheres of brain that causes disorientation and then damages the brain completely. An undercover narcotic agent Bob Arctor wants to discover the ultimate source of supply and disguises himself as a user but before he can realize anything, he is addicted to it.
A Scanner Darkly by Philip K. Dick
Originally published: 1977
Author: Philip K. Dick
Adaptations: A Scanner Darkly (2006)
Genres: Science Fiction
Characters: Bob Arctor, Charles Freck, James Barris, Donna Hawthorne,Ernie Luckman