Tis the season of goodwill, and Dickens extends the hand of friendship to a stranded stranger and his nephews for Christmas, with deadly consequences . . .

Wilkie Collins is looking forward to spending Christmas at Gads Hill, Charles Dickens' Kentish country home, but the festivities are cut short when a body is found on the snowy marshland. Timmy O'Connor was invited to the gathering with his four nephews after a chance encounter with Dickens, but is now dead.

Dickens is convinced the murderer is one of the convicts from a nearby prison ship, but Collins is not so sure. Who was this mysterious and unpleasant stranger from Cork who turned Christmas cheer to fear? With the convicts, guests and even Timmy's nephews under suspicion, there is no shortage of suspects for such a violent act, but which one of them is a cold-blooded killer?