On New Year’s Day 1998, Ben Smart and Olivia Hope disappeared after a party in New Zealand’s Marlborough Sounds. They were last seen in a water taxi with a lone man, heading toward a boat in the early hours of the morning. Their bodies have never been found. In this episode, we follow the case in order — the party, the final boat ride, the search, the police investigation, the trial, and the case that still divides New Zealand.