- Actor Allusion:
- In the first episode, when Cassandra betrays the team, Stone explicitly mentions that they must have Leverage on her.
- In "And The Loom Of Fate," which involves parallel universes, Dulaque-as-Lancelot is played by Jerry O'Connell, who knows a thing or two about that.
- Also Flynn is perfectly at home in an ER.
- In "And the Infernal Contract", John de Lancie knows something about playing nigh-omnipotent beings who end up Brought Down to Normal.
- In "And The Tears Of A Clown", Felicia Day plays an ordinary woman who finds herself swept in magical goings-on. She's got some experience with that. Even her character's name is similar to that of her Supernatural character.
- This isn't the first time Alicia Witt played someone with supernatural powers.
- Actor-Shared Background: Jake Stone is from Oklahoma and turned down two scholarships to study art history; Christian Kane is also from Oklahoma and chose to try acting instead of studying art history.
- And Starring: Noah Wyle is always credited as a special guest star; apparently this was due to guild reasons as you can't star in two shows at the same time.
- Enforced Method Acting: In the scene in the warehouse in "And the Horns of a Dilemma", Lindy Booth did accidentally bump her head.
- Fake Brit: Canadian-American Matt Frewer as Evil Brit Dulaque.
- The Other Darrin: In Quest for the Spear, Nicole Noone was played by Sonya Walger. When the character returned in Season 4, she was played by Rachel Nichols.
- Production Posse: A lot of the behind the scenes crew of Leverage came over onto The Librarians, including producer and regular director Jonathan Frakes. In addition, Christian Kane plays a variation of the Big Guy role he played as Eliot Spencer and Beth Riesgraf plays a recurring character.
- Real-Life Relative: The younger version of Dulaque is played by Jerry O'Connell, Rebecca Romijn's husband. Making it all the more hilarious when Dulaque and Baird come to blows in the season finale.
- Throw It In!: Matt Frewer (Dulaque) is an actor known to go off script at times, but John Rogers said he stuck to his lines in this. However, he did throw in some physical ad-libs, like a bit with some hand gel.
Trivia / The Librarians (2014)