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. Vikram tries to track them down with the help of a mysterious tarot card reader.
Connor is forced to reconnect with people from his pre-Library life, and must defeat an old adversary who has grown powerful in his absence.
While on a visit to a small-town festival, Connor encounters the very first vampire, and finds himself fighting the clock to save himself from turning into one.