In 1994, 29 bald eagles were found dead at DeGray Lake in Arkansas. This mass mortality event kicked off a search for the culprit which has last over 25 years. On this episode of the Bio Eats World Journal Club, host Lauren Richardson talks to Susan B. Wilde of the University of Georgia about her group's work finally identifying the eagle killer, and revealing a complex web of ecosystem dysfunction. Solving this mystery required a fresh point of view, a wide range of techniques and technologies, and an international collaborative effort.