Third Law of Attrition - Laws of Attrition, #3

Chiara has given up trying to work out why Cygnus wants the cold-fusion device. He can't have her inventions, or her, or her family. Pushed to the edge by Cygnus's increasingly dangerous behavior, constant surveillance, and the terrifying reality of the world she lives in, Chiara realizes she only has one choice: escape. First, though, she must rescue her family. But how? Finding them is an almost impossible challenge.
And there's still the mystery of her missing brother hanging over her head. Another problem? The world outside the dome is a toxic wasteland. Chiara must use every ounce of her scientific prowess to invent solutions to keep herself and her family alive. Finally, there's Deran. Chiara relies on him more than ever as she works toward her goal. Will he go with her when she flees? Can he forgive Chiara for the secrets she's still keeping? Every day is a dangerous game where any tiny misstep will bring disaster.