Then Sam receives a call at his office. Bryden – working from home that day – has failed to collect their daughter from daycare.

Arriving home with their little girl, he finds his wife’s car in the underground garage. Upstairs in their apartment her laptop is open on the table, her phone nearby, her keys in their usual place in the hall.

Except Bryden is nowhere to be seen. It’s as if she just walked out.

How can she have disappeared from her own home? And did she even leave the building at all?

With every minute that passes – and as questions swirl around their community – Bryden and Sam’s past seems a little less perfect, their luxury condo less safe, their friends, neighbours and relatives no longer quite so reliable . . .