When Cheung knows Chow needs an insider to assist him in investigating the case, in which the mobster Changing Guy, extorted money from a rich merchant Kam, Cheung recommends Chan as the right person.

• 张无意中获悉周正物色卧底人选，协助调查千面人勒索富商金大成一案，于是他极力推荐陈为最佳人选。