Traditionally treated separately from the Mediterranean slavery of the later middle ages, the study of slavery in the early and central middle ages has mostly fixated on locating and explaining the disappearance of Roman slavery and its replacement with serfdom. Marc Bloch provided the seminal study for this line of inquiry. While subsequent scholars have debated Bloch's approach to defining medieval slavery, his proposed causes for its disappearance, and the timing and pace of the transition, most studies nevertheless continue in the tradition of attempting to answer his question. Some recent studies, however, have moved away from this question altogether to elucidate the continued significance of slavery in various societies of the central middle ages. 1 | INTRODUCTION The study of slavery in the early and central middle ages has traditionally concerned itself principally with locating its end and replacement with medieval serfdom. While the roots of this tradition extend much earlier, modern scholarship has largely taken its lead from a seminal study by Marc Bloch. Subsequent studies have endlessly debated nearly every aspect of Bloch's thesis without reaching any useful consensus, but some few have productively abandoned the underlying question of how and when early medieval slavery transformed into serfdom in favor of investigating the particular dynamics of slavery in various societies, many of which appear to have retained some form of slavery in the central middle ages, well beyond the point of its supposed decline. This review will trace these trends as an introduction to the major developments of the field for a new entrant. An exhaustive inventory and thorough discussion of all notable studies will not be possible in this brief review, but a number of useful references will be included in the bibliography. Further absent will be any discussion of the historiography of late-medieval slavery, in accordance with a longstanding-if perhaps indefensible-division between the two historiographies. This division runs deeper than can be explained by the disciplinary partition between early and late medievalists, and it persists in the face of