DOSA and Apep infiltrate the Library as the Librarians' two-front battle comes to a climax. Here, the Librarians must put aside their differences to save the Library, themselves and the world. The Season 3 finale.
A routine artifact retrieval takes an alarming turn when the relic grafts itself to Cassandra. Meanwhile, a blizzard forces Stone and Cassandra to take refuge at a mysterious hotel holding a demon convention. Noah Wyle directed the episode.
The Librarians clash with the Egyptian God of Chaos, who inhabits a human body and intends to release pure evil into the world. The Librarians must decode a succession of clues at a science museum in order to thwart Chaos. The Season 3 premiere.