Osborne, Mary Pope <br/><br/>
Dogs in the Dead of Night. 

 - A Merlin Mission 
 - New York, NY :  Random House Children's Books,  2011. 
 - 114 
 - Magic Tree House #46 .
<br/><br/> 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. 
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<br/><br/><label>ISBN: </label>9780375868245 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Magic - Fiction<br/>Time Travel - Fiction