Eve of the emperor penguin /
by Mary Pope Osborne ; illustrated by Sal Murdocca. --
- New York : Random House Children's Books, c2008.
- 109 p. : ill. --
- Magic tree house ; Merlin mission #40. .
"A Stepping Stone book." "With stickers"--Cover.
The magic tree house takes Jack and Annie to Antarctica to search for the fourth secret of happiness for Merlin.
Jack (Fictitious character : Osborne)--Juvenile fiction. Annie (Fictitious character : Osborne)--Juvenile fiction. Brothers and sisters--Juvenile fiction. Time travel--Juvenile fiction. Magic--Juvenile fiction. Tree houses--Juvenile fiction. Voyages and travels--Juvenile fiction.