A lab accident during a mission causes Marc to experience abnormal changes. When his behavior turns aggressive, Marc becomes a danger to his family and himself. It's up to Tony, Lee, and Megan to find a way to help him before they lose their brother forever.
Amazing Spiez!/SpieZ! Nouvelle Génération - Rated: T - English - Family/Drama - Chapters: 5 - Words: 13,284 - Reviews: 2 - Favs: 4 - Follows: 4 - Updated: 2/14/2019 - Published: 12/15/2018 - Marc