"Earthling," the sixth episode of Fringe season two, centers on Agent Phillip Broyles investigating a series of radioactive, ash-producing deaths linked to a shadowy, extra-dimensional entity. The case forces Broyles to confront a similar failure from his past while the team, led by Walter Bishop, works to neutralize the entity. Read more in the episode review at The Fringe Podcast Rewatch - Libsyn . The Fringe Podcast Rewatch - Libsyn