
Panicked and scared, Cassie tries to clean up any evidence she’s there and returns to New York City, where the FBI question her for Alex’s death. However, when Cassie wakes up, she sees that Alex is dead in bed next to her, with his next slit open.

After dinner (and many, many drinks), Cassie returns to Alex’s hotel room and the two have sex. When Alex exits the plane, he asks Cassie on a date, and the two meet in Bangkok later that night for dinner. The series starts with Cassie on a flight from New York City to Bangkok, Thailand, as she meets Alex Sokolov (Michael Huisman), an attractive businessman. The show stars Kaley Cuoco as Cassandra Bowden, a flight attendant who is accused of murder. The Flight Attendant premiered in November as an eight-episode miniseries. The Flight Attendant book differences explain why there’s a season 2 of HBO Max’s latest hit with Kaley Cuoco.

The "someone" was Buckley, one of the several men that Cassie had slept with in the book.

But, the Russians figured out that Elena was a double agent and sent someone to kill both Elena and Cassie. However, her Russian boss was not thrilled with leaving a witness and ordered her to kill Cassie.

But, also because she was a double agent and not keen on killing an innocent American citizen. Elena didn't kill Cassie, too, because she knew that Cassie was a drunk and not likely to be a threat to her. First of all, Alex was killed by Elena, a Russian spy.
