Haddix, Margaret Peterson <br/><br/>
Risked - Book 6. 

 - New York, NY :  Simon & Schuster,  2013. 
 - 305 
 - The Missing .
<br/><br/> Author's note includes facts about the Romanovs and the mystery surrounding their deaths. 
<br/><br/> Jonah, thirteen, and Katerine, eleven, travel through time in 1918 Russia just as Alexei, Anastasia, and the rest of Tsar Nicholas II's family is about to be executed. 
<br/><br/><label>ISBN: </label>9781416989844 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Nicholas II, Emperor of Russia, 1868 - 1918 - Family - Fiction<br/>Time Travel - Fiction