This book casts light upon the shadowy figure of the "wrongdoer" in Second Corinthians, disclosing the type of offence that was committed and the relationship of the "wrongdoer" to Paul and to the Corinthians. Drawing upon the social and rhetorical conventions that governed friendship, enmity and reconciliation in the Greco-Roman world, the book offers an hypothesis regarding the identity of the "wrongdoer" and reconstructs the history of Paul's relationship with an influential convert to Christianity at Corinth.