Dept H #11

"Mia knew there was a traitor in the Dept. H base when she descended to the bottom of the ocean to solve her father's murder. As the coincidences and accidents pile up, she can't deny that traitor is sabotaging her investigation. Now Mia's only chance at saving her own life, and the lives of her friends, is to solve the murder and figure out who among them is willing to die to keep their crime a secret. "