Protégé is a 2007 Hong Kong-Singaporean co-produced crime drama film written and directed by Derek Yee, starring Andy Lau, Daniel Wu, Louis Koo, Zhang Jingchu and Anita Yuen.

Undercover officer Nick had spent the last seven years penetrating into the core of a drug ring, working his way up from a street dealer post to the managerial position handling cargo deliveries for Kwan – the biggest player in the local heroin market.

This, together with his affair with heroin-addict Fan, causes Nick to become more and more confused about his true identity, and eventually leads to a disastrous end.

The film begins with a scene in a dark isolated rundown apartment building, showing a heroin addict living poorly with her young daughter.

Perry Lam, for example, wrote in Muse magazine, 'The movie is powerful precisely because it doesn't preach, and therefore spares us all the usual opinions, standard platitudes and naive assumptions about drug dealing and addiction.