Flight attendant Cassandra Bowden wakes in her hotel room in Thailand, hungover from the night before and with a dead body lying next to her. Afraid to call the police, she continues her morning as if nothing happened, joining the other flight attendants and pilots traveling to the airport. In New York, she is met by FBI agents who question her about her recent layover in Thailand. Still unable to piece the night together, she begins to wonder if she could be the killer.

Rattled by her own lies and under pressure from the FBI, Cassie goes against Annie's advice to lay low and tries to find some answers by digging into Alex Sokolov's work life - with bizarre and shocking results.

Returning from Rome to find someone has broken into her apartment, Cassie doubles down on finding Miranda - even if it means crashing Alex Sokolov's champagne-soaked memorial service at his family home.

After literally piecing together evidence from Alex's home, Cassie follows the paper trail to a private jet service while juggling a visit from her brother and his family, unearthing more of her unconventional childhood.

With Miranda on her tail and the FBI closing in, Cassie enlists Max in a plan that involves breaking and entering. Ani is forced to repay an ominous favor to a client. Megan's secrets threaten to come to light.

Reeling from a major fallout with Annie and running from anything related to Alex, Cassie brings Buckley along for an alcohol-fueled escapade. Megan embarks on a clandestine mission. Miranda continues to hunt Cassie.

Cassie is forced to work with a surprising new ally as she reconsiders all that's happened since Bangkok. Megan's life begins to implode when her husband faces consequences for her actions.

Cassie comes face to face with Alex's killer; Annie makes a surprising revelation; Megan comes clean.