Lady Cop & Papa Crook (Chinese: 大搜查之女; pinyin: Da sou zha zhi nu; Cantonese Yale: Daai sau cha ji neui) is a 2008 Hong Kong crime film written and directed by Alan Mak and Felix Chong, and starring Sammi Cheng and Eason Chan. Chan plays the kingpin of a red diesel crime ring who is forced to team up and co-operate with a hot-tempered police officer (Cheng) when his son is kidnapped, thus beginning an unlikely alliance between fellow police officers and criminals.