Pursuit of a Killer

This is one of those who did it murder movies put out by Shaw Brothers In this one a bunch of Mainlanders come to Hong Kong for a better life Instead these Mainlanders are jobless and wind up killing robbing and selling drugs for a Dai Lo Tired of getting chicken scratch from their Dai Lo for all the work theyve done the Mainlanders about 4 or 5 decide to do a big job for themselves by trying to rob a jewelry store The heist goes awry with all the Mainlanders being apprehended by the HKRP They all to go to jail and do their time and get discharged Once out the Mainlanders are getting rubbed off one by one and the HKRP do not have a clue Luckily one member Yeh Hung Lo Meng of the Mainlander gang is still in jail who still has time So Inspector Wong Jason Pai Piao decides to cut Yeh Hung loose and let him walk the streets as bait to bring the killer out