A novelization of the film, written by Campbell Black, was released in 1981. The book was a worldwide sales success and included details not present in the film. Among them is Marion was aged 15 when she and Jones had their affair, the staff of Ra headpiece has explicit instructions not to look at the opened Ark, and Brody finds Jones at home after having just entertained one of his students. Black, who was paid $35,000 plus royalties, sued Lucasfilm in 2005 for not paying him his percentage of the book sales profits. Marvel Comics produced a comic book adaptation of the film shortly after its release.