Eve of the Emperor Penguin (Magic Tree House: Merlin Missions Book 12)

Moonlight on the Magic Flute (Magic Tree House (R) Merlin Mission Book 13)

Dark Day in the Deep Sea (Magic Tree House (R) Merlin Mission Book 11)

Monday with a Mad Genius (Magic Tree House (R) Merlin Mission Book 10)

A Good Night for Ghosts (Magic Tree House (R) Merlin Mission Book 14)

Leprechaun in Late Winter (Magic Tree House (R) Merlin Mission Book 15)

Blizzard of the Blue Moon (Magic Tree House (R) Merlin Mission Book 8)

Dragon of the Red Dawn (Magic Tree House (R) Merlin Mission Book 9)

A Ghost Tale for Christmas Time (Magic Tree House (R) Merlin Mission Book 16)

A Crazy Day with Cobras (Magic Tree House (R) Merlin Mission Book 17)

Dogs in the Dead of Night (Magic Tree House (R) Merlin Mission Book 18)