Shadow Murder) is a 2009 South Korean neo-noir mystery thriller film directed by Park Dae-min.

Then one night, Gwang-soo, a medical physician in training, discovers a corpse in the woods and secretly takes it to practice dissecting.

While planning to flee in the middle of the night and afraid of murder accusations, Gwang-soo meets Jin-ho, and asks him to find the killer.

When another corpse turns up in the woods, murdered in the same way as the first victim, Jin-ho and Gwang-soo use a piece of cloth they find in the victim's mouth as the lead they need to bring them one step closer to the real killer.

According to its distributor CJ Entertainment, Private Eye attracted more than 554,000 viewers nationwide in the four days since its premiere on April 2, 2009, making it #1 at the South Korean box office.