Gospel of Peter to be the work of the Apostle Peter: However, scholars generally agree that Gospel of Peter is pseudepigraphical (bearing the name of an author who did not actually compose the text). The true author of the gospel remains a mystery. Although there are parallels with the three Synoptic Gospels, Peter does not use any of the material unique to Matthew or unique to Luke. Raymond E. Brown and others find that the author may have been acquainted with the synoptic gospels and even with the Gospel of John; Brown ("The Death of the Messiah") even suggests that the author's source
Synoptic Gospels that have been fulfilled among us, just as they were handed on to us by those who from the beginning were eyewitnesses and servants of the word, I too decided, after investigating everything carefully from the very first, to write an orderly account for you, most excellent Theophilus, so that you may know the truth concerning the things about which you have been instructed. The "synoptic problem" is the question of the specific literary relationship among the three synoptic gospels—that is, the question as to the source or sources upon which each synoptic gospel depended when it was written. The