The text is divided into five chapters and is succinct. All the chapters are well written. In the first chapter, "Structure and Function of Psychiatric Emergency Services," Richard E. Breslow enumerates the multiple existing and evolving delivery models for emergency psychiatric care—consultation, specialized psychiatric services, crisis hospitalization, and mobile units. The staffing of these various models is also diverse. The second chapter, by Glenn W. Currier and coauthors, explores medical, psychiatric, and cognitive assessment in the psychiatric emergency service. The authors note the high incidence of comorbid medical illness among patients in the psychiatric emergency service—50 percent of the patients have major medical illnesses—and review the literature to determine how to best assess for these illnesses in the acute care setting. These authors also comment on the Accreditation Council on Graduate Medical Education's scant four-month general medical requirement for psychiatric residents, suggesting that residents may be poorly equipped to handle even routine medical problems.