The third, and apparently final, part of the Librarians tie-in books came out after the series ended (and there was much mourning among the fans).
As you might guess from the title, The Librarians and the Pot of Gold by Greg Cox deals with… leprechauns, banshees and faerie changelings. Oh, and the Brotherhood of Serpents (and remember, St Patrick drove the snakes from Ireland).
The Brotherhood, in the time of St Patrick, used an infant to force a Leprechaun to hand over his pot of gold. The Librarian interferes, and the Leprechaun escapes with the baby, while the Brotherhood loses one of their people, and the gold as well.
In the present time, a group is trying to track down the Leprechaun again, still wanting his pot of gold. Or more to the point, they want to pot for nefarious purposes. The Librarians, while trying to stop this plot, are also pulled into the case of an Irish style pub being plagued by a Banshee. Gee, could these events be connected.
The fun thing about the tv show was just how tongue in cheek it was (stealing Santa’s sled? Why not?). Greg Cox does a great job of matching that tone in his spinoff books. I just hope that Tor books will continue with the books, even if the TV show is gone,
Thanks to the publisher and Netgalley for letting me read this