Twelve years ago, eight friends ran an exclusive group at university: The Masquerade Murder Society. The mysteries they solved may have been grisly, and brilliantly staged, but they were always fictional—until their final Christmas Masquerade, when one of the group disappeared, never to be seen again.Now our young, privileged cast of old university friends are summoned to the depths of Scotland for a Christmas-themed masquerade party. But all are hiding something deep below the surface that could make or break their careers. Charley is a struggling actress who has always been on the periphery of this high-flying group, but has decided to reunite with her frenemies on the promise of career help if she joins the old cast for one last weekend.