Alan Mak
Overheard () is a 2009 Hong Kong crime thriller film written and directed by Alan Mak and Felix Chong, and produced by Henry Fong and Derek Yee. The film stars Lau Ching-wan, Louis Koo and Daniel Wu as a trio of police officers conducting surveillance on a public company. The film was released theatrically in Hong Kong on 30 July 2009. The sequel, "Overheard 2", was released in 2011.