Never Say Die. Tess Gerritsen

Twenty years after her father's plane crashed in the jungles of Southeast Asia, Willy Jane Maitland was finally tracking his last moves. She recognised the dangers, but her search for the truth about that fateful flight was the only thing that mattered. Closing in on the events of that night, Willy realises that she is investigating secrets that people would kill to protect. And without knowing who to trust, the truth can be far from clear cut. . .