Tropical Murder: A John Reegan Conner Mystery:

Tropical Murder: A John Reegan Conner Mystery J's new philanthropist girlfriend Celia travels to Hawaii where her helicopter is shot down killing the five student who were award winner for conservation efforts. The sabotage is seen by a local Mountain Priest so J. finds it's a murder not an accident. The NTSB reports no survivors. He sends his investigation team to Hawaii to find the perpetrators of this heinous act.
He's surprised to find that before the crash Celia has changed her will. ...