During a break in filming, on set photographer, David Esquire, snapped some stills of Scott Kaske blowing smoke into the dressing room mirror. In one quick shot you can clearly see a face appear in the smoke. The scene was filmed in the house where actor John Abbott died.
The role of Charlie was in the process of being cast when the directors went to a showing of Dark Skies. As soon as they saw Kadan Rockett is was clear that he was the one and motions were set for him to join the cast the next day.
While shooting Pepper's exit from the club, she accidentally flagged down 3 regular taxis before flagging down the taxi used for filming.
The robe that Pepper wears in the alleyway and dressing room scenes is the actual robe worn by Brad Pitt in Fight Club.