Starting with the second season, actors Paul Miller and Maurice Dean Wint are removed from the opening credits and Matt Frewer joins the cast as the new case manager, Matt Praeger. Michael Moriarty joins the cast in the recurring role of Michael Kelly, a conspiracy theorist who is friends with Praeger. The series now focuses on one case per episode and is structured more like a one-hour drama series. The second season features more character development as well as story arcs. After a limited role in the first season, Director of Operations Frank Elsinger (Nigel Bennett) becomes a more prominent presence and is often believed to have a hidden agenda, mostly by Matt Praeger who questions many of his decisions. Michael Kelly causes problems for Elsinger, as he often involves himself in various O.S.I.R. cases and tries to expose the truth. In the second-season finale, "The Egress" (part one of a three-part story arc where the team discovers "The Egress", an arch in which you disappear if you step inside), Curtis Rollins returns after being absent since near the end of the first season. Dr. Anton Hendricks is lured into the arch at the sight of his missing wife and daughter, and he disappears. The team is in conflict at the end of the season, as Praeger learns Lindsay has betrayed him by leaking information, meant to expose Elsinger's questionable ethical activity. Praeger offers his resignation, and Elsinger offers Peter Axon the case manager position.