Season 1 of "The Librarians" consists of 20 episodes, which premiered on October 6, 2014, and concluded on May 18, 2015. The season introduces the main characters, including Flynn Carsen (Joshua Jackson), the team's leader; Sophie Wentz (Lana Condor), a skilled librarian; Jake Stone (Genelle Williams), an expert in magical artifacts; and Travis Fimmel, who plays the role of Rittenhouse, a mysterious organization.