The Informer

金手指

Also known as Gam sau ji, Jin shou zhi

Wang Chung plays the standard level-headed cop in charge of a rag-tag bunch of misfits and stereotypes (the coward, the playboy, etc.) who are after a drug runner. After their informant is killed, the team turns to a former Triad member (Danny Lee) to infiltrate the gang and bring the big boss down.