Pursuing a gunrunner with spinal meningitis, Baretta becomes infected and has 48 hours to find the man and his cohorts before he has to go into quarantine.

After a young pickpocket is killed, Baretta solicits the help of an expert to infiltrate the gang that operates at an airline terminal.

A retarded waitress who sees a narcotics cop commit murder allows herself to be persuaded that another man committed the crime.

When a plea bargain falls through, Baretta must infiltrate a murderous motorcycle gang to save his informant.

After a crime lord is arrested, Baretta must jeopardize an undercover policewoman to stop an escalating war of succession between gangland factions.

Baretta tracks a distraught father who has killed the doctor he believes responsible for the death of his son, then has gone after the local drug dealers as well.

Persuaded by his grandson to reopen the case of a retired cop supposedly killed in a fall, Baretta discovers a judge on the take.

Baretta finds out that that hit man he is trying to stop from killing a local mobster may be one of his childhood friends.

Baretta tries to stop a Japanese martial arts expert from taking personal revenge on the mobsters who murdered his daughter.

Baretta doggedly follows a truck driver he suspects of killing the cat burglar who injured his wife, waiting for the man to make a mistake that will reveal his guilt.

When a dying hoodlum entrusts his girlfriend with a detailed record of all his underworld activities, she is sought by both the police and his former cronies seeking to protect themselves.

A mobster orders a ""hit"" on Baretta's new partner, a drug-sniffing police dog.

A parole officer is murdered after telling Baretta that a model who supposedy killed herself months earlier is alive in Mexico.

When the dead body of a prominent attorney's wife is found, Baretta becomes interested when he finds that there is no record of her existence before age 20.

Baretta vows revenge on the hoodlum whose thugs murdered his girlfriend.

Baretta risks his life going undercover as a prison inmate to discover why two suspects in a jewelry heist were killed.

When his childhood friend is murdered, Baretta tries to protect the pregnant widow and her unborn child from the killers, and from her own drug habit.

Believing that Baretta pocketed $500,000 in stolen bonds after stopping a robbery, a mobster takes Billy hostage until the money is turned over.

Baretta tries to nail a seemingly untouchable crime czar by placing the aging man under painfully overt 24-hour-a-day surveillance.

After Baretta kills a drug pusher in a shootout, the man's teenage brother vows revenge.

To find an arsonist, Baretta seeks the help of a former investigator who retired after suffering both physical and psychological damage in a fire.

Baretta's career and reputation are almost ruined by a beautiful photographer who tricks him into helping her steal a half million dollars of mob money.