Baretta comes to suspect that his close friend, a music store owner, may not only be a drug dealer, but may be unknowingly selling heroin so pure that it is killing his customers.

Baretta has to go on the run to clear his name after he is framed for the murder of a gun dealer he was investigating, who was selling weapons to teenagers.

Baretta must use his wits to survive after he and a runaway girl he apprehended unwittingly get into a police car being driven by a couple of holdup men disguised as cops.

When a conventioneer is murdered, Baretta finds that the only witness is a busboy who doesn't want to get involved, but the real murderer is after the man too.

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

While Baretta is investigating a series of waterfront killings, his cover becomes in danger of being blown by a waitress who knows him and thinks he is responsible for the death of her boyfriend.

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

To infiltrate a gang of jewel robbers, Baretta seeks the help of a former expert safecracker he once sent to prison.

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.

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.

Baretta is investigating a mob theft of diamonds belonging to Mr. Nicholas and winds up helping a merchant who is threatened by a new group in the neighborhood called the East Side Benevolent Society, who is forcing all the shop owners to pay money for protection or suffer the consequences.

Baretta must find a nurse's 9-year-old sister, witness to the murder of a blind hot-dog vendor, before the killers do.

When his partner is charged with shooting a suspect in the back, Baretta tries to locate the only witness who can save the man's career, but the real murderers are after him too.

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

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.

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

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

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

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

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.

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

When a mother has second thoughts after selling her baby, she helps Baretta infiltrate a group trafficking in black market babies.

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

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

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

Insufficient evidence allows a man to be released from jail and resume his efforts to hurt a nightclub dancer.

An FBI computer expert poses as a field agent to join Baretta on a case regarding stolen emeralds that led to murder.

Baretta tries to save a teen-age male prostitute who is being pursued by a killer after witnessing a friend's murder.

Baretta poses as the trainer of a former champion boxer to trap a drug-smuggling murderer.

Baretta puts his career at risk by sheltering a retarded teenager who he thinks has been falsely accused of killing his mother.

An attack on the leader of a street gang, and the murder of his girlfriend, threatens to ignite a war in the barrio.

His concern for an elderly amnesiac interferes with Baretta's investigation of a schoolyard drug pusher who is responsible for several overdose deaths.

War veterans are being blamed for a series of bombings that are actually the work of a wheelchair-bound bomber who is attacking buildings and transportation systems without handicap access.

Baretta does a lot of soul-searching after wounding a boy while trying to stop a holdup. Then he himself is targeted for revenge by one of the robbers who escaped.

Two elderly neighbors of Baretta's steal a million-dollar racehorse back from the thief who originally took it, then hide it in their apartment until they can claim the reward.

A woman who was attacked is so traumatized that she clings to Baretta and hampers his investigation of the robbery and murder she witnessed.

When his friend Billy is one of the hostages taken by robbers trapped at a roadside tavern, Baretta tries to negotiate a deal between them and a sheriff who is unwilling to concede anything because of his political situation.

When a former girlfriend shows up with a baby named after him, Baretta plans to marry her until it turns out that she is a pawn in a power struggle between two mobs, with an assassin on her trail.

Baretta comes to the aid of a has-been comic trying to make a comeback, who has recently suffered several attempts on his life.

Family loyalty compels a friend of Baretta's to agree to kill the man who assaulted an aging mobster's daughter.

On temporary duty with the vice squad, Baretta learns that his partner is taking bribes, and is ordered by his boss to investigate the other officers on the squad as well.

Baretta tries to find out why a laundry owner, who happens to be engaged to his cousin, refuses to identify the two men who held up his store and killed a cop.

Baretta tries to help a 12-year-old girl who has run away from the orphanage find her recently paroled father before he takes part in a jewel robbery.

Baretta's young partner is ostracised by his Gypsy family for refusing to perform an atonement ceremony after accidentally killing his younger brother during a robbery.

Baretta goes undercover as a trucker to help the daughter of a murdered newspaperman pursue the hijackers who killed her father when he got too close.

Faced with a difficult kidnapping case, Baretta accepts help from a girl who appears to have psychic knowledge of the crime.

A mobster who was badly scarred as the result of a shoot-out seeks revenge on Baretta.

Two actresses, one of whom is Rooster's cousin, are in fear for their lives after a murder allows them to make off with $50,000 in stolen money.