Sent to the Arctic circle to investigate a recent murder, detective Jonas Engstrom (Stellan Skarsgard) finds himself unable to sleep due to the perpetual daylight. But things get worse for the respected cop when he fouls up an opportunity to catch the killer &, hidden from view, accidentally shoots his partner instead. Engstrom then tries to save his reputation by pinning the killing on the villain; however, the villain is the one person who saw what actually happened & he soon uses this knowledge against the cop, drawing him into a subtle & dangerous game in which their two fates become inextricably intertwined. Later remade in Hollywood with Al Pacino in the starring role.