Klappentext

One photo. Seven friends. And a stranger who vanished.

A group of old friends gather at a remote Scottish castle, one last weekend before Georgie's wedding. They take a group photo - but what they see stops them cold.

Because there's a stranger behind them.

None of them saw him, and nobody knows where he went.

Their perfect weekend is turning into a perfect nightmare.

They're desperate to leave. But someone won't let them.

"I loved the classy writing and ever-growing sense of unease in this clever subversion of a classic country house mystery" - Harriet Tyce

"A chilling drama" - Sunday Times