Overheard is not a ‘wham-bang-thank-you-ma'am' kind of movie. It has foreplay. And works on several different levels.

On one, it is a crime thriller. It is also a cop movie. Throw in friendship, brotherhood, romance with some subtle social commentary and it becomes quite layered indeed.

The first third of the movie is quite good setup for the characters - a team from Hong Kong's police force that specialises in electronic espionage.

BE careful, nothing that you hear or see may be what it seems and this is what the Cantonese movie Overheard is about.

The Hong Kong stock exchange attracts not only money but many who try to manipulate the market.

At the Hong Kong Police Force Commercial Crime Bureau, an operation is underway against insider trading involving Feng Hua International, a listed company.