New.
B Format.
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.