In the last episode of season three, Cathy gets lost during a scuba diving lesson in Puerto Rico and ends up on board a local fisherman's boat. Sean is plagued by guilt when Cathy fails to return to the dive boat because, as her diving partner, he was supposed to be looking out for her. Unaware of the frantic search for his missing wife, Paul is flattered when an attractive woman pays him attention in a beachside bar.
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