The debate intensified with the publication of three new books. Scott G. Brown's revised doctoral dissertation "Mark's Other Gospel" from 2005, was the first monograph that dealt only with Secret Mark since Smith's books in 1973. Brown argued that both the letter and Secret Mark were authentic. The same year Stephen C. Carlson published "The Gospel Hoax" in which he spells out his case that Morton Smith, himself, was both the author and the scribe of the Mar Saba manuscript. And in 2007, musicologist Peter Jeffery published "The Secret Gospel of Mark Unveiled", in which he accuses Morton Smith of having forged the letter.