Peter Tripovich (Douglas Huffel) is a real-life dentist, like his character in the film. He would read over one page of the script between patients in his dentistry.
Jake Burger was commonly referred to as "The Eyeline" on set, this was because he was constantly being consulted regarding the actor's eyeline for scenes with multiple characters and different setups.
During the final scene, Jason Tully (Hugh O'Brien) can be seen in the background. He is the production manager and prop specialist on the film. The police shirt he is wearing as part of the costume had much of the back of it cut out to be used as test materials for epaulets on the other shirts.
The film is set over a total of seven days.
The dolly grip, Anthony McDonald, built the dolly by hand for Haavard and Edvard Christie for the film. This included a motorised unit that would move the camera backwards and forwards at various speeds. He had previously built them a jib.