Young Indiana Jones and the Mask of the Madman was supposed to be the sixteenth young adult novel in the Young Indy series published by Random House, and the third by authors Megan Stine and H. William Stine. Ultimately the book went unreleased, but some information has been archived in online shopping store product pages. The story was to be set in 1912 and found Indiana Jones and his cousin Lyle kidnapped by a Mexican cult.