The Librarians is an American fantasy adventure television series developed by John Rogers that premiered on TNT on December 7, 2014. The show is a direct spin-off of the Librarian film series, sharing continuity with the films. The Librarians are an ancient organization dedicated to protecting an innocent world from a magical and fantasy-like secret reality hidden from view. TNT cancelled the series in March 2018, days after the final episode of the fourth season. A spin-off called The Librarians: The Next Chapter will premiere during the 2024–25 broadcast season.

Rebecca Alie O'Connell is an American actress and former model. She is known for her role as Mystique in the original trilogy (2000–2006) of the X-Men film series, as Joan from The Punisher (2004), the dual roles of Laure Ash and Lily Watts in Femme Fatale (2002), and Una Chin-Riley on Star Trek: Discovery (2019) and Star Trek: Strange New Worlds (2022–present). She has also had a recurring role as Alexis Meade on the ABC television series Ugly Betty. Her other major roles include Eve Baird on the TNT series The Librarians, voicing Lois Lane in the DC Animated Movie Universe, and as the host of the reality competition show Skin Wars.