Rad Red is hot on the trail of his arch-nemesis, Dr. Finitevus. What he finds, however, is an ever-deepening mystery! But before he can investigate further, the newest Dark Egg Legion chapter attacks! To save Angel Island, Knuckles must team up with the Downunda Freedom Fighters - as well as Dr. Finitevus? Collects the entire "Knuckles Returns" storyline from Sonic Universe #9-12.