Black Mirror: White Christmas
by Charlie Brooker; dir. Carl Tibbetts (BBC, 2014)
The grimmest of Christmas specials, leavened only by Jon Hamm’s used-car salesman vibe as three flashback stories twist into barbed wire. Oona Chaplin conveys the potential horror of relative time in a virtual environment, paving the way for Rafe Spall’s unravelling denouement.