On a Still Night — Colin D. Peel

In California, British avionics expert Christopher Ward is leading an enquiry into the tragic disappearance of passenger aircraft working Pacific routes when he falls victim to an unexplained attempt on his life. The subsequent cancellation of Ward's project forces him to begin his own search far into the South Pacific, where he witnesses the terrible reason behind the loss of so many lives. Amidst the lagoons and reefs, Ward is faced with a desperate fight for his own survival. Unless he can escape, his secret will die with him.