The magic treehouse whisks Jack and Annie back to the days of deserted islands, secret maps, hidden gold, and nasty pirates.

"Time is running out for the Peculiar Children. With a dangerous madman on the loose and their beloved Miss Peregrine still in danger, Jacob Portman and Emma Bloom are forced to stage the most daring of rescue missions. They'll travel through a war-torn landscape, meet new allies, and face greater dangers than ever. Will Jacob come into his own as the hero his fellow Peculiars know him to be? (Features more than 50 all-new Peculiar photographs.)"...

"Jack and Annie travel back in time to 1925 Nome, Alaska, where they meet Balto, the famous sled dog, and help save the town from illness." --

Jack and Annie travel back to nineteenth-century Ireland to inspire a young Augusta Gregory to share her love of Irish legends and folktales with the world.

When his father disappears while experimenting with a black mirror that is a portal to both the past and the future, Jake encounters obstacles when he tries to use the mirror to find his father.

When Ms. Information kidnaps the President's daughter, it is up to twelve-year-old Ruby, also known as Pufferfish, to use her super-nanobyte-enhanced allergies in leading the NERDS' investigation.

Jack and Annie travel to a monastery in the Swiss Alps where, with the help of St. Bernard dogs and magic, they seek the second of four special objects necessary to break the spell on the wizard Merlin's beloved penguin, Penny.

Time has gone wrong, and best friends Dak Smyth and Sera Froste, together with the young Hystorian Riq, must use the infinity ring to travel back to one of the Great Breaks--a mutiny on the Santa María--to correct history and defeat the SQ.

Time travelers Jonah and Katherine arrive in 1611 to rescue missing child John Hudson, son of the explorer Henry Hudson, but just as the mutiny on the Discovery is supposed to start, Jonah and Katherine's knowledge of history is tested once again, and they fear that more is at stake than just one boy's life. Author's note includes facts about Henry Hudson's explorations.

"The magic tree house whisks Jack and Annie away to South America, where they must climb Machu Picchu to save a baby llama" -- Provided by publisher.