Williams, Maiya <br/><br/>
The Hour of the Cobra. 

 - New York, NY :  Amulet Books,  2006. 
 - 297 
<br/><br/> When Rowan, Nina, Xanthe, and Xavier are reunited in a time travel mission to ancient Egypt in the time of Cleopatra, a jealous Xanthe makes decisions which put them all in jeopardy. 
<br/><br/><label>ISBN: </label>0-8109-5970-4 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Time Travel--Fiction<br/>Space and time--Fiction<br/>Adventure and adventurers--Fiction<br/>Brothers and sisters--Fiction<br/>Twins--Fiction<br/>Egypt-History-332-30B.C.--Fiction