We cant let this go. Its heartbreaking. Shed left for hawaii, a new life, with a new husband. But the sunny paradise soon grew dark. Something was very wrong it was horrible being so helpless. What was behind their moms strange death . They set out together to discover the answer. And they were about to get some help from their mother herself. There it was. Evidence she left for you to find . Yes a possible clue. Hidden, in an envelope marked baby pictures. But tucked inside . A journal that painted a different picture, entirely. We pulled out the envelope and that was like, wow. Could their mom help them solve her own mystery . We cant quit. We are her voice. We made a promise. We made a promise to our mom. Im lester holt. And this is dateline. Tonight, Keith Morrison with the promise. Here they were again. Two sisters on a holiday in paradise. Or so the other vacationers must have assumed here in americas midpacific garden. In the lush resort near honolulu. But they would be wrong. T