While Laura attempts to find Scotty, who has fled to Mexico, she continues to pursue Luke and moves into the same apartment building as him. Meanwhile, Luke takes a job with wealthy Edward Quartermaine (then played by David Lewis) and his niece Alexandria (Renee Anderson), who are searching for the Ice Princess, the world's largest uncut diamond. Also in pursuit of the diamond is Mikkos Cassadine (John Colicos), a wealthy Greek tycoon bent on world domination. Luke and Laura reconcile and decide to get married when Robert Scorpio (Tristan Rogers), an agent for the World Security Bureau (WSB), informs Luke the statue the diamond is hidden in also contains a formula for a dangerous substance called "carbonic snow" that is powerful enough to freeze Port Charles.