A plesiosaur can be seen swimming in the pool in the last shot of the library floor. In a later episode of the follow-on series, Jenkins mentions that the largest animal they have in the library is Nessie, a.k.a. the Loch Ness Monster. Nessie believers have speculated that the monster might actually be a plesiosaur.
At first glance, the fact that Simone possesses a full-length mirror appears a bit odd; as a vampire, which in common lore don't cast reflections, she would have no practical need for it. However, it's possible that it holds sentimental value for her.
Mentioned by Stana Katic's character is a pirate's "puffy shirt." This may be a reference to the Seinfeld episode (Season 5, Episode 2) in which Jerry unknowingly agrees to wear a puffy shirt on television.