Lurking in the Shadows: Lisa's Ultimate Challenge is a Pokemon fanfiction piece written by DarkPersian479 and can be found on the Serebii.net Forums. It is a Trainer Journey Fic that takes place in the author-created Fourtix Region and follows the story of 15-year-old Lisa Northwood on her journey. It is rated PG-13 for violence and language. It has been completed; all 54 chapters have been posted.