The new 12th edition of the Kamisar-LaFave-Israel-King-Kerr criminal procedure casebook is completely up to date. Older material has been compressed or eliminated to make way for the new. Moreover, the new edition displays the same (a) thoughtful organization of subjects, (b) judicious selection and editing of cases, and (c) intelligent use of the rich criminal procedure literature that has made this casebook the most widely used book in its field since it first appeared 40 years ago.