A contract with a demon can grant any wish for a price, and will cause horrible fortune towards any outside parties seeking to break it. It's up to the Librarians to locate and contain one such contract, which only gets more complicated when an old friend of Baird's gets involved, wishing to feel like a hero...at any cost.
Guest starring John de Lancie as the demon.
- Achilles' Heel: While Sesselman is an all-powerful demon who can grant you anything you ask for, as long as you sign his contract. However, he has one major weakness: He must grant whatever the signatory wishes for, even if it isn't in his best interest. Baird exploits this to defeat him. To add insult to injury, by removing his powers, Baird renders him unable to continue fulfilling his end of the contract, effectively nullifying it and allowing her to keep her soul.
- Actor Allusion: While Sesselman is more sinister than Q, they both react very similarly to being turned into a human.
- Badass Boast: "Ezekiel Jones doesn't do easy. He does impossible."
- Brief Accent Imitation: Stone briefly imitates Jones's accent while accusing him of becoming a good guy.
- Brought Down to Normal: Baird uses her wish to turn Sesselman into a human.
- Challenge Seeker: Jones claims this is why he doesn't use magic to steal everything valuable in the world: that would be easy, and "Ezekiel Jones doesn't do easy."
- Continuity Nod: Jenkins reminds the Librarians that they went to Oklahoma without Baird in "And What Lies Beneath the Stones".
- Deal with the Devil: The Episode.
- My Grandson Myself: Sesselman appears every 44 years with the same last name and a different first name, to deliver on the terms of the contract.
- Noodle Incident: Jenkins refers cryptically to the "moon landing farce."
- Wicked Cultured: Sesselman has his moments.I find that everything after the 1756 Dom Perignon disappoints.
- Working the Same Case: Baird is investigating the disappearance of the intern because her friend asked her to. The Librarians are investigating it because it showed up in the clipping book.