At the height of the dry season, Amanda Black awoke in her hotel room to another radiant blue sky. She started the morning of Feb. 28, 2013, walking Jacó beach on Costa Rica’s central Pacific coast with her father and sister, followed by a dip in the hotel pool. At 10 a.m., a beautician showed up to do her makeup, and the photographer arrived an hour later. At noon, Black met her extended family in the lobby of the Hotel Club del Mar, and they all boarded a bus.