Bumper's (George Kennedy) suspicions are aroused by a man who confesses to four brutal murders and supplies undisclosed details about the crimes.
Bumper is suspended and faces murder charges after shooting a robber on the street.
An ex-con has a job, but an informer says he is in on plans for a big robbery.
Bumper tries to extract information from Chinatown residents about a gang war.
An interfering vigilante continues his personal battle against crime despite warnings from Bumper (George Kennedy).
A retired cop is heavily in debt to a bookmaker Bumper has doggedly tried to shut down.
During a drug bust, a young cop kills a pusher and makes it appear that he was trying to protect Bumper (George Kennedy).
Against Bumper's (George Kennedy) advice, a young prostitute returns to the streets and is lured into a mean and powerful pimp's operation.
Convinced a derelict is innocent, Bumper seeks the real killer of a former detective.
Stolen whiskey, an arrogant coworker and a handgun shipment provide Bumper (George Kennedy) with a barrage of problems.
Havoc invades Bumper's (George Kennedy) district when two petty thieves steal an antitank gun that could kill every cop in sight.
Bumper (George Kennedy) pursues a jewelry fence who has mob connections, but makes a major blunder in the process.
Trying to avoid inevitable violence, Bumper (George Kennedy) searches for a bookie's collection man who fled with a week's worth of receipts.
Bumper's erstwhile girlfriend is a victim of a pair of armed robbers.
One of Bumper's (George Kennedy) informers helps in the case of a burglary ring headed by a pawn shop operator.
Trouble comes in the form of a loan shark collector who's terrorizing people in Bumper's (George Kennedy) territory.
After Bumper (George Kennedy) catches a heroin dealer, he learns that the criminal is being freed to help federal narcotics agents.
Bumper (George Kennedy) trails an odd hotel burglar whose speciality is slashing teddy bears.
Bumper (George Kennedy) becomes the target of an ex-con and a professional hit man.
Bumper (George Kennedy) learns of a fashion-house chief's design to strike a big drug deal.
The assistant of an unscrupulous bookmaker refuses help from Bumper (George Kennedy) for fear of reprisal.
The lawyer of a wounded mugger is his sister, who doesn't believe he is a hood.
Two brutal hoods put their victims through savage beatings in Bumper's (George Kennedy) district.