YMMV / The Librarians S 1 E 06 And The Fables Of Doom

• Complete Monster: Mr. McGuire is a seemingly-kindly old librarian who discovers a magic book that can give strength to the user. Using it to drain the life of a little girl and more innocents, he begins unleashing fairy tales on the local town to terrorize them, all while continuing his "stories" to the child. McGuire reveals he intends to kill everyone in the town via harvesting their lives, gloating that he has given so much to the town and now they can give him their lives in turn.