The Librarians head to Paris after a string of robberies leaves mysteriously lovestruck victims in their wake.

When a Librarian from 200 years ago reappears today, he brings back to life a long-closed magical Library and accidentally resurrects an evil Drekavac. The Librarian, along with a quickly assembled team, must stop the Drekavac before it can kill and multiply.

Our newly assembled Librarians crew investigates a mysterious "dancing sickness," leading them to a showdown with a powerful magical factioneer at a professional ballet company.

Half of the team becomes trapped on a runaway ghost train, and the rest of the team must help solve the unresolved business of the ghosts on board.

The team goes to a college campus with a world-class observatory to discover who is using the Crystal of Dr. John Dee to steal people's memories, in order to own the future.

When the magic door reroutes Charlie, Lysa and Connor to a bizarre manor where a series of Agatha Christie-style murders take place, they must figure out whodunnit, while Vikram tries to track them down with the help of a mysterious tarot card reader.