This contribution to the Continuum "Companion" series, edited by Miller (Wake Forest Univ.), rivals and in a few ways surpasses similar titles, including those that are part of Blackwell's and Cambridge's Companion series, and Oxford's Handbook and Studies series. One feature that sets this volume apart, and that future competitors will want to emulate, is its section of three chapters called "New Directions in Ethics." The chapter titled "Experimental Ethics," by Thomas Nadelhoffer and Walter Sinnott-Armstrong, sets out in a very approachable way the sorts of questions that experimental ethics is meant to answer, along with information on the methods that are available and useful in answering those questions. William FitzPatrick's chapter titled "Biology, Evolution, and Ethics" seeks to bring readers up to date on the conclusions and methods since E. O. Wilson suggested that morality be taken from philosophers and "biologized." And Pekka Väyrynen writes a chapter on moral particularism. Other contributors include Al Mele, Joshua Gert, and Russ Shafer-Landau. Summing Up: Recommended. Graduate students through faculty/researches.