Hindsight is a 2011 South Korean action drama film by Lee Hyun-seung, his first after a ten-year hiatus. The film is about a hitwoman who struggles with her feelings for the underworld boss who is her target. The film deals with issues of age difference, and the Korean underworld. It stars Song Kang-ho and Shin Se-kyung, and premiered at the 16th Busan International Film Festival. The film received a total of 763,776 admissions nationwide.

Song Kang-ho is a South Korean actor. Song made his film debut in The Day a Pig Fell into the Well (1996), and came to national prominence with a series of critically acclaimed performances, including No. 3 (1997), Joint Security Area (2000), Sympathy for Mr. Vengeance (2002), Memories of Murder (2003), The Host (2006), Snowpiercer (2013), The Attorney (2013), and A Taxi Driver (2017).