Matt Dickinson 
Mortal Chaos: Deep Oblivion 

Butterfly effect: The scientific theory that a single occurrence, no matter how small, can change the course of the universe forever. Hannah, homeless and on the run. Gwen and Tehpoe, kidnapped by violent rebels. Todd and Isabella, threatened by piranha attack. Wai Yan, hunted by a cruel dictator. Stian Olberg, fighting to save his vessel from imminent destruction. For them, and many others, things will never be the same again. Some will live. Many will die. All are connected. The action is non-stop in this tense and compelling adventure.