Who is Laura Clark?

To her colleagues, she's an invisible forty-something HR manager, emailing about lift repairs and quietly stocking the meeting-room snacks.

To her golf-obsessed husband and selfie-obsessed teenage daughter, she's the reliable constant - dinner on the table, mess cleaned away, needs met without thanks.

To her elderly mother, she's a patient ear for endless complaints.

Laura Clark is the woman everyone relies on. And barely anyone sees.

But one day Laura puts on her 'out of office' message - and doesn't come back. And soon, everyone's formerly ordered lives quickly begin to descend into all-out chaos.

Where has Laura gone?
Has something terrible happened to her?
Or has she - unthinkably - decided to finally give her own life the finger?

To find out, the people in her life must realise that, maybe, they never really knew Laura Clark at all . . .