David X Prutting/BFA; Paul Porter/BFA; iStock; Rebecca Zisser/BIOne Friday evening in late June 2017, an 18-year-old college student arrived at a $10 million East Hampton home, where she'd been invited by a male friend. It was her first time in the wealthy Long Island enclave, and she was excited to spend a weekend among New York's upper crust.The house, classic white with a gray-shingled roof, had eight bedrooms, a 16-seat movie theater, and an outdoor pool with a hot tub.