Shot over nine days in January 2012.
Most of the shoots were done at night outside for at least twelve hours, almost always in low-teen temperatures.
During one night of filming in Holyoke, MA, a swarm of police cars convened in front of a boarded up building across the street from the set and proceeded to raid it, bringing several hand-cuffed criminals out with them.
The diner scene was all improvised and one continuous shot lasting 3:30.