Magic Tree House: Books 29-32: #29 Christmas in Camelot; #30 Haunted Castle on Hallow's Eve; #31 Summer of the Sea Serpent; #32 Winter of the Ice Wizard

Christmas in Camelot
It begins with a simple invitation to spend Christmas Eve in Camelot, a magical place that exists only in myth and fantasy. What Jack and Annie don’t know is that the invitation will send them on a quest to save Camelot itself — not from destruction, but from being forgotten forever.

Haunted Castle on Hallow’s Eve
The castle looms dark against the light of the moon. Giant ravens circle in the sky. Merlin the magician needs someone to find out what has happened. But who is brave enough to brush the cobwebs aside and go through the heavy doors? Merlin thinks he knows the answer to these questions–Jack and Annie.

Summer of the Sea Serpent
Jack and Annie are off on another mythical mission at the request of Merlin the magician. Luckily, they have a young sorcerer, Teddy, to help them. From underwater caves to a Spider Queen, from mystical selkies to a magical sword, this is a Magic Tree House adventure kids won’t want to miss!

Winter of the Ice Wizard
Jack and Annie, joined by Teddy and Kathleen travel in the Magic Tree House to a land of snow where the Ice Wizard has captured Morgan and Merlin. The four friends must find the Ice Wizard’s missing eye . . . or is it really his heart that is missing?