Bob was a funny man ... after all



The impetus for the series Twin Peaks was the mystery of who killed Laura Palmer. When production began on the pilot, "Northwest Passage", series creators David Lynch and Mark Frost had decided that the murderer would be revealed as Leland Palmer, Laura's father. During the filming of a scene in the pilot taking place in Laura's room, Frank Silva, a set dresser, accidentally trapped himself in the room prior to filming by inadvertently moving a dresser in front of the door. Lynch had an image of Silva stuck in the room and thought that it could fit into the series somewhere, and told Silva that he would like for him to be in the series. Lynch had Silva crouch at the foot of Laura's bed and look through the bars of the footboard, as if he were "trapped" behind them, and filmed it, then had Silva leave the room and filmed the empty room; after reviewing the footage, Lynch liked the presence that Silva brought to the scene and decided that he would put him somewhere in the series.
Later that day, a scene was being filmed in which Palmer's mother experiences a vision which frightens her; at the time, the script did not indicate what Mrs Palmer had seen to frighten her. Lynch was pleased with how the scene turned out, but a crew member informed him that it would have to be re-shot, because a mirror in the scene had inadvertently picked up someone's reflection. When Lynch asked who it was, the crew member replied that it had been Silva. Lynch considered this a "happy accident," and decided at that point that the unnamed character to be played by Silva would be revealed as Palmer's true killer.