Jigsaw and Mila try to solve the mystery of an old key which was found by the new boy in town.

Diego is under the spell of the wizard Maldred who wants to control the Naga, an enormous dragon that lives deep within the Earth, and plans to use Diego to steal the two keys necessary for that purpose; the first key is guarded by Argent, the silver dragon, and Jean his dragon master, so Drake, Bo, Carlos, and their dragons travel to Gallia to try and stop the theft and break the spell on Diego.

"The evil wizard Maldred has stolen the gold and silver keys which will allow him to release the Naga, the powerful earthquake dragon at the center of the earth--so Drake and several of the other Dragon Masters travel to the Naga's Temple in the Dragon Islands, to try and stop Maldred, and prevent him and the earthquake dragon from destroying the kingdom." -- (Source of summary not specified)

The K Apartments for Ladies are occupied by over a hundred unmarried women, once young and lively, now grown and old - and in some cases, evil. Their residence conceals a secret, a secret connecting the unsolved kidnapping in 1951 of four-year-old George Kraft to the clandestine burial of a child's body in the basement bath-house. So, when news comes that the building must be moved to make way for a road-building project, more than one tenant waits...

This is a great time to reprint the spellbinding start to The Keys to the Kingdom! Best-selling author Garth Nix creates a magical world and an intriguing mystery in this new blockbuster series.Seven days. Seven keys. Seven virtues. Seven sins. One mysterious house is the doorway to a very mysterious world -- where one boy is about to venture and unlock a number of fantastical secrets. This is another thrilling, triumphantly imaginative series...

Neither Cleo nor Evan like the new school librarian, Ms. Crowley, but they are very curious about where she disappears to at the back of the library, so one day they follow her--and find a secret door, a magical library full of locked books, and a letter from the previous librarian telling them that she is trapped somewhere between the covers of one of the enchanted books, and they must travel through the stories in order to save her.

"Three never-before-collected additions to the series the A.V. Club called a 'modern masterpiece, ' showcasing the depths of depravity and the beautifully heart-breaking heights writer Joe Hill and artist Gabriel Rodriguez have to offer within the sprawling world of Locke & Key"--Back cover.

In their second trip through the enchanted library, the new key lands Cleo and Evan in the middle of a spy story, where their impossible mission is to stop a traitor who calls himself Viper -- and they find themselves working with the replacement librarian, Ms. Crowley, whose exact role in their adventures is becoming increasingly mysterious.

Third-grader Nancy tries telling fortunes but learns it is a bit more complicated than she thought, and after learning about time capsules, she and Bree discover an old silver key and investigate its story in the hope of finding treasure.