Here's what they don't tell you: the film's most haunting scene—the single-take stadium chase—wasn't planned that way. Director Juan José Campanella had mapped out a conventional sequence of cuts, but on the day of filming, the actor playing the killer, Javier Godino, refused to stop running. The cameraman, on a Steadicam, had no choice but to follow. The result—seven minutes of raw, vertiginous pursuit through a 1970s Buenos Aires soccer stadium—became the film's beating heart. But Godino's refusal wasn't method acting. It was guilt.