The present volume is an updated version of the hornbook most recently published in its Sixth Edition under the authorship of the legendary Wayne R. LaFave. The Sixth Edition, like its predecessors, included the work not only of LaFave but also of Professor Austin W. Scott, Jr., who collaborated with Professor LaFave on the first edition of this hornbook. In this Seventh Edition, I have endeavored to take into account all developments in the field of criminal law as of January 2023. Some of the recent changes are relatively minor, while others, such as California's repeal of the felony murder rule, are comparatively significant. But in either case, the DNA of this new volume remains essentially unaltered: the brilliant vision executed primarily by Professor LaFave.