First Published in 1938, The Enigma of the Fourth Gospel by Robert Eisler presents a comprehensive overview of the Fourth gospel, its author, and its writer. In forty-one chapters, it discusses themes like an insoluble enigma; the preface to the Christian reader; the longer Anti-Marcionite preface to the Fourth Gospel; the Greek and the Latin texts of the Anti-Marcionite prologue to Luke; the two traditions about the evangelist John; John killed by King Herod in Jewish tradition; the two tombs of St. John in Ephesus; the confusion of the two Johns; who wrote the Gospel dictated by John; the date of the Fourth Gospel and of the first Epistle of John; traces of Marcionism in the Gospel of John; John the evangelist and the Fourth evangelist identified. This is a must read for scholars and researchers of Christianity and religion.