Sasha Chermayeff, a close friend of John F. Kennedy Jr. and Carolyn Bessette, recalls their final summer before their deaths in a plane crash in 1999. The couple, who were subject of the hit FX series "JFK Jr. & Carolyn," had been dealing with challenges including the death of their cousin, Anthony Radziwill, and the stress of their marriage. The show has sparked a new wave of interest in their cosmopolitan romance and has attracted fans nearly 27 years after their deaths. However, there has been backlash, with John's nephew Jack Schlossberg and his former girlfriend Daryl Hannah criticizing the show's creator Ryan Murphy for creating a "tragedy-exploiting" series.