One loving couple. One surprise guest. One week to destroy everything…

When the doorbell rings, I take one last look round the villa. The nuts and olives are in bowls; the white wine is chilling in the fridge; everything is ready for my old college friend, the guest I’m dying to impress.

When I open the door, Coco steps from the dusty street into the cool tiled hall, as effortlessly beautiful as ever. But then her face freezes in horror, her mouth falling open. I turn to see my husband Jeff behind me, his eyes wide, his cheeks pale.

After a moment, they both smile, pretending nothing happened at all. But I know what I saw.

This holiday was meant to rescue my marriage, not ruin it.

But the connection between my friend and my husband isn’t what I thought.

All three of us have something to lose, and something to fight for.

And when the truth comes out, not all of us will survive…