Don't let go by Michelle Gagnon

Don't Let Go is the final book in a trilogy which started with Don't Look Now and continued with Don't Turn Around. The series, if you don't know it, is well suited to the rebellious hacker generation and features a tough girl named Noa who once she figures out that someone is kidnapping street kids and experimenting on them, is determined to put a stop to it.      In the final instalment, Noa, Peter, Teo and Daisy are doing their best to evade the corporation's men who are determined to apprehend them. At the same time the teens are trying to decode the stolen hard drives and crack the code behind project Persephone. Noa's health is not improving, the men seem to be able to find the teens regardless of where they hide, and Noa and Peter are having a great deal of difficulty finding a facility with the computing power that they need. I don't say this often, but the ending is both gripping and satisfying.