Ben Smart and Olivia Hope were last seen about 4am on January 1 1998 when they were dropped off to a yacht by a water taxi.
Ben Smart and Olivia Hope, left, and Scott Watson. Photo: SUPPLIED / Pool / John Kirk-Anderson
Ben and Olivia were planning to sleep on the chartered yacht Tamarack but found all the berths were full.
Three other passengers were travelling on the water-taxi, one was a single man who offered the pair a place to sleep on his yacht.
Ben and Olivia head off with the man, to his yacht - this is the last time they are seen alive.
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Five months later, on the 15th of June, 1998, Scott Watson was arrested and charged with their murder.
