TY  - BOOK
AU  - Osborne, Mary Pope
TI  - Magic tree house Merlin missions: summer of the sea serpent 
SN  - 9780375864919
U1  - Fiction OSB-M 
PY  - 2004///
CY  - New York
PB  - Random House
KW  - Young Learners
KW  - Time travel
KW  - Magic
KW  - Selkies
KW  - Brothers and sisters
KW  - Swords
KW  - Tree houses
KW  - Annie (Fictitious character from Osborne)
N1  - The #1 bestselling chapter book series of all time celebrates 25 years with new covers and a new, easy-to-use numbering system!

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!

Formerly numbered as Magic Tree House #31, the title of this book is now Magic Tree House Merlin Mission #3: Summer of the Sea Serpent.

Did you know that there’s a Magic Tree House book for every kid?
ER  -