I can see a person's inner personality.

In one of his best performances to date, Lau Ching-wan plays the multi-dimensional role of Bun, an outcast detective whose psychotic personality and unorthodox investigative methods have cost him his job - even though he has always solved the cases entrusted to him. After cutting off his own ear and offering it as a gift at a party in honour of one of his superiors, Bun is forced into retirement. The only person who still believes in Bun is power-hungry inspector Ho (Andy On). Ho is determined to solve the complex case of a missing police gun and its vanished. Beginning with a quest for answers, Mad Detective becomes a breathtaking roller coaster of delightfully off-kilter events.