An airport in the middle of the middle of nowhere. A lonely pilot. A new client. A seductive blonde. A proposition.

Erika Garza would never sleep with a married woman. Luckily for her, Christine Parrish isn't technically married. Every Tuesday, Garza takes Parrish's partner Saul to Calgary. Every Thursday she brings him home. In between, on the "ghost days," the women begin an intense affair.

It's the perfect arrangement.

Until one Tuesday when Saul doesn't show up. The same day Parrish vanishes without a trace.. And the police arrive on Garza's doorstep.