The novice sleuths accept their first official detecting assignment: uncovering the &ldquo;secret&quot; of an elderly millionaire&rsquo;s pretty young wife.<br /><br />If they succeed, their newly founded business, The Triple Threat Investigation Agency, will prove a viable venture.&nbsp;The problem? The wife is found murdered along the sapphire shores of Oahu.And there&rsquo;s a secret all right, one of many, but the deceased woman is not the only one keeping them.&nbsp;<br /><br />As Jill, Rey and Linda try to fit the puzzle pieces together, they stumble across several more bodies. But who is the killer?