Overheard

A Hong Kong police surveillance team is assigned to monitor Feng Hua International, a company suspected of illegal insider trading. Johnny, Gene and Max are experienced officers in the Commercial Crime Bureau, and their electronic eavesdropping finally yields solid evidence against the firm's smooth-talking chief executive. Faced with that proof, the three men see a chance to profit from the information themselves, and the temptation to use what they have gathered turns the investigation back on the investigators, drawing suspicion from both their own oversight authorities and the criminals they were watching.

Overheard was released in 2009 and runs 100 minutes. It is a Hong Kong, Chinese and Singaporean production from Bona Film Group, Sil-Metropole Organisation, Bona Entertainment and Salon Films, directed by Alan Mak and Felix Chong Man-keung, who also wrote the screenplay; Derek Yee Tung-Sing and Henry Fong produced. For Mak it followed Infernal Affairs, its two sequels, 1:99 Shorts, Initial D and 无间道正序版; for Chong it was his first directing credit, ahead of The Lost Bladesman, Overheard 2, Project Gutenberg and The Goldfinger, so the two later returned to this premise in a second instalment.

Lau Ching-wan, Louis Koo and Daniel Wu lead as Johnny Leung, Gene Yeung and Max Lam, with Zhang Jingchu, Alex Fong Chung-Sun and Michael Wong among a credited cast of 57. The film took about 3 million USD worldwide. On IMDb it holds 7.1/10 from 3,700 votes; on TMDB it has 6.9/10 from 120 votes.