Papa is a 2024 Hong Kong family drama film directed and written by Philip Yung. Distributed by Golden Scene, it is based on the real-life 2010 Heung Wo Street Murder, in which a mentally unstable son killed his mother and sister, leaving his father as the sole survivor. With Sean Lau, Jo Koo, Dylan So, and Lainey Hung portraying the family, the film is set in the aftermath of the murder and follows the father (Lau) as he navigates survivor guilt and seeks reconciliation with his son (So).