John's Transformation of Mark brings together a cast of internationally recognised biblical scholars to investigate the relationship between the gospels of Mark and John. In a significant break with the prevailing view that the two gospels represent independent traditions, the contributors all argue that John both knew and used the earlier gospel. Drawing on recent analytical categories such as social memory, 'secondary orality,' or 'relecture,' and ancient literary genres such as 'rewritten Bible' and bioi, the central questions that drive this volume focus on how John used Mark, whether we should speak of 'dependence,' 'familiarity with,' or 'reception,' and whether John intended his work to be a supplement or a replacement of Mark. Together these chapters mount a strong case for a reassessment of one of the key tenets of modern biblical criticism, and open up significant new avenues for further research.