Dogs in the Dead of Night : Magic Tree House #46.
- New York, NY : Random House, 2011.
- 111
- Magic Tree House .
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.
978-0-375-86824-5
Magic--Fiction Time travel--Fiction Saint Bernard dog--Fiction Dogs--Fiction Brothers and sisters--fiction Alps, Swiss(Switzerland)--History--19th century--Fiction Switzerland--Fiction