I would give this a 3.5. This was an interesting premise: men and women convicted of serious crimes are sent to an island, formerly Costa Rica, where genetically engineered dinosaurs live and prisoners either learn to survive or get eaten. Oakley was wrongfully convicted and sent to this island as punishment. Survival depends on her being accepted into one of the several groups that have been established by convicts. Oakley makes a life for herself, but her past follows her as her father, who actually is responsible for creating the mutant dinosaurs that roam the jungles, wants to control her, and a rogue FBI agent is chasing her believing she killed his partner. This adventure has a lot of tension, but detracting from that are the overly numerous subplots and separate feuds between different individuals. The novel gets too chaotic keeping all the conflicts in forward momentum, and some of the characters are forced to act erratically as a result, changing alliances with little explanation or poorly explained motivation. Oakley also has special genetic powers, as do her siblings, that just seem difficult to accept. There is a lot of running through the jungle, attacks by monsters, and people having to make sacrifices. After a while, the sheer amount of conflict just becomes numbing. This novel needed less to deliver more in the way of a compelling story.