The final official arrival of a subspecialty presented the need for an accompanying textbook of forensic psychiatry. The single chapter in the back of standard textbooks of psychiatry would no longer suffice. Although there had always been a scattering of forensic articles in diverse publications ranging from psychiatric journals to law reviews, there was a need for a text discussing the topics typically encompassed by forensic psychiatry. The first edition of Rosner’s textbook met this need, as does the second. Both of these volumes were authorized by, and edited for, the Tri-State Chapter of the American Academy of Psychiatry and Law (New York, New Jersey, and Connecticut). The continued expansion of the field, in its academic and participatory aspects, along with dating of certain materials, led to the need for a new edition. Dr. Rosner, as the editor, has pulled together a diverse set of 105 author experts in 92 chapters for another winning production.