This stylish, action-packed period thriller starring Hong Kong superstars Nick Tse and Lau Ching-wan pays homage to Sherlock Holmes and Dr. Watson as a 1930s-era detective duo investigate a series of strange murders in which “phantom bullets” seemingly vanish. The murders are committed in a bullet factory ruled by a vicious boss and henchman, who force a female worker suspected of stealing to play Russian roulette, with tragic results. Could the murders be the work of a vengeful ghost exacting revenge?