Black Ransom is a 2010 Hong Kong action thriller film directed by Wong Jing and Venus Keung and starring Simon Yam, Michael Miu and Fala Chen.
Before his wife was murdered, Inspector Mann Cheung (Simon Yam) was a model to young detectives.
Not only was his detective image affected, his relationship with his daughter Yan (Wada Hiromi) also went downhill.
The new superintendent Koo Kwok-keung (Fala Chen) assigned him to take charge of a series of kidnapping cases.
Mann soon discovers that the gang of kidnappers were former members of the Special Duties Unit, led by Sam Ho (Michael Miu) and his girlfriend, Can (Qu Ying), a former member of the VIP Protection Unit, who were familiar with the police modus operandi and were able to escape from apprehension.