Peņa, Matt de la <br/><br/>
Curse of the ancients 

 - New York :   Scholastic,   2013 
 - 188 p.  
 - Infinity ring ;   book 4 .
<br/><br/> Sera has seen the future, and it is terrifying. Unfortunately, she can't do anything to prevent the Cataclysm while stranded with Dak and Riq thousands of years in the past. Their only hope lies with the ancient Maya, a mysterious people who claim to know a great deal about the future. Is there more to these ancients than meets the eye? 
<br/><br/><label>ISBN: </label>9780545386999 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Time travel --Juvenile fiction<br/>Best friends--Juvenile fiction<br/>Mayas--Juvenile fiction<br/>World history--Juvenile fiction