Copyright © 2012 by Mark Haskell Smith All rights reserved. Published in the United States by Broadway Paperbacks, an imprint of the Crown Publishing Group, a division of Random House, Inc., New York. Broadway Paperbacks and its logo, a letter B bisected on the diagonal, are trademarks of Random House, Inc. Cultivating and consuming marijuana for medical use is legal in the state of California and, at the same time, illegal in the United States under federal law. Because of this, the author has changed names and identifying details to protect the privacy of some of the individuals in.