When Lord Oakley hosts his annual Christmas gathering at his remote country retreat, it soon becomes swamped in terror. A ferocious snowstorm prevents anyone from leaving, abandoning all hope as tragedy unfolds. The tension mounts up, leaving the family, the servants and the guests not knowing whom they can trust. As the numbers decrease, it soon becomes clear that they are all targets in a vicious plot, but could there be a factor that links them all together? With nobody able to escape, only one thing is clear; the murderer is one of them and Albert must find the answer to the only question they all have: who?