King James Version
Then Peter, turning about, seeth the disciple whom Jesus loved following; which also leaned on his breast at supper, and said, Lord, which is he that betrayeth thee?English Standard Version
Peter turned and saw the disciple whom Jesus loved following them, the one who had been reclining at table close to him and had said, "Lord, who is it that is going to betray you?"Catholic Public Domain Version
Peter, turning around, saw the disciple whom Jesus loved following, the one who also had leaned on his chest at supper and said, "Lord, who is it who shall betray you?