Ari Millen, who plays Michael, played the same role in the play that he does in the feature film.
Coal Campbell, Nicholas Campbell's actual son, plays him as a younger man in the film.
Amos Crawley, who plays Thomas Coward, was the director of the play at the Fringe Festival (2013).
In a Q&A session, writer Peter Genoway said that the original draft of the script, dated 2010, had the title 'Elk Lake'.
At about 1:10, the new bartender changes the radio station by turning the volume knob on the cassette tape player, which is sitting on top of the receiver.