Now almost a year sober, Cassie has started fresh in LA with her supportive new boyfriend, Marco. But her side gig moonlighting as a CIA asset soon finds Cassie entangled in an international murder mystery… again.

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.

A cryptic text leads Cassie to search for Megan in Reykjavík, where Shane grows increasingly suspicious of his friend’s erratic travels. Back in LA, Annie and Max face unexpected turbulence.

After finding potentially incriminating photos in Benjamin’s office, Cassie seeks assurances from Shane – and continues to avoid Marco – while Megan searches for an all-important lockbox.