Cassie follows a surprising paper trail to a suspiciously empty private jet service. Later, a visit from her brother Davey forces Cassie to confront her memories of her "unconventional" childhood.

Reeling from a major fallout with Annie – and running from anything related to Alex – Cassie brings Buckley along for an alcohol-fueled escapade that ends in a meltdown.

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

Cassie comes face to face with Alex’s killer. Annie works with the FBI. Megan comes clean.

After revealing her secret side gig to Annie and Max, Cassie sets out to find the woman who's been impersonating her – and zeros in on enigmatic new flight attendant Grace.

Cassie faces hard truths about her path to sobriety while visiting her mom as Megan attempts to reconnect with her family, who are reluctant to welcome her back.

Cassie, Shane, Annie, and Max attempt to run down clues in the string of murders – which continue to point to Cassie as the main suspect.

Cassie manages to connect the dots in a far-reaching conspiracy, while Megan tries to make amends with Shane.