Evil Star (Power of Five #2) by Anthony Horowitz

Description

Matt thought his troubles were over when he closed Raven’s Gate  but in fact they were just beginning. His fate  and the fate of the world is tied to four other kids across the globe. The second is a street kid in Peru. He and Matt have never met; they don’t even speak the same language. But destiny is going to throw them together as the evil threat of the Old Ones grows and another Gate suddenly comes into play.

Another masterful thriller from supernaturally suspenseful Anthony Horowitz.