An assassin critically wounds a visiting dignitary and Stone and Briggs must thwart the killer's plan to finish the job.

Stone goes undercover to catch a gang of counterfeiters but his cover is soon blown.

The squad entertains a visitor from Scotland Yard, Inspector Murchison, who's trailing jewel thief Dandy Phelps. What they don't know is that the real Murchison was murdered upon arriving at the airport, and that their guest is really Harry Wade, Phelps' double-crossed partner, who's out to gain sole control of the stolen jewels.

Sam and Jim keep close watch on a playboy pharmaceutical salesman and his timid buddy, whom they suspect in a theft and murder at a drug laboratory.

The critically injured survivor of an auto accident has a bag with a huge sum of money in his possession, and Sam suspects that he's a syndicate courier. When thugs threaten to kill the man's family unless they get their money, Jim poses as the courier to complete the delivery.

Sam persuades Terry Carew, a former football star turned pitiful junkie, to help him nail pusher Braden.

A player in a poker game aboard a yacht bets his life and loses, and Jim and a policewoman pose as high rollers to enter the game and nail the killers.

Sam's suspicions are aroused when a hit-and-run driver returns to the scene of the crime to confess, but no body can be found.

A beautiful woman disappears before she is to give a damning testimony against racketeer Arnie Kale in a murder trial, and Sam and Jim suspect that she has been lured into a trap.

Sam reacquaints himself with an old girlfriend, whose charming but troubled brother is involved in a jewel theft and murder.

A boy tells Sam that his mother, a nurse, got lost while they were playing hide-and-seek, and a subsequent investigation reveals that she's been kidnapped by a deranged country singer who wants her to treat his critically wounded wife.

Sam and Jim aid a department store manager whose wife and son were kidnapped after a robbery went awry.

Sam and Jim travel to Central America to bring back deposed syndicate chieftain Stengl so he can testify against his successor and brother-in-law Luther, but unwittingly walks into an ambush.

While traveling back to the states with Stengl, Luther's men take Dan and Stengl's comatose daughter hostage.

Sam and Jim witness a boat explosion that killed a veteran cop, but their suspicions are fueled when no body can be found, and it's also discovered that the dead man was working as a private operative for an old friend who's being blackmailed.

Sam and Jim must pursue a harried executive who flew into a murderous rage after discovering his wife's affair with a tennis instructor.

Sam and small town Sheriff Cal Cable pursue the same girl for different reasons, Sam needs her testimony to convict mob boss Gus Mills for murder, while the corrupt sheriff wants to silence her.

The body of the manager of singer Julie Brown washes up on the beach, and Sam and Jim take on ruthless record executive Ollie Olds, who is out to sign the young singer to a contract.

Jim's concern for Julie almost costs him his life, and he and Sam must prove that Olds is trying to control her through massive doses of LSD.

A beautiful but naive heiress is led to believe that a potential suitor wants to elope with her, unaware that he's really a kidnapper out for a big payday. Her rich and powerful father hinders the investigation by trying to handle the situation without the cops.

Sam and another cop are ambushed while transporting a witness, and the witness is kidnapped. While Sam is recovering in the hospital, Jim and Dan pursue the abductors who want their hostage, a reformed safecracker to assist them in a burglary.

Three attempts on Jim's life have him in hiding while Sam and Dan try to figure out why mob boss Cal Wolff wants the young cop dead.

Two murderous brothers are out for revenge against Stone, who killed their other brother years before during a shootout.

A veteran cop dies in a warehouse fire, putting Stone and Briggs on the trail of an arsonist for hire whom they must stop from setting fire to a freighter full of plastic goods.

Suspecting that the bizarre death of a public relations man was no accident, Stone goes head to head with the dead man's ruthless boss, a powerful image maker who sets out to discredit the veteran cop.

Joe Morales, an ex-con whom Sam helped obtain a warehouse job, is suspected of breaking into the safe and killing his new boss, but Sam suspects that the young man was set up.

Detective Jim Briggs breaks up a parking lot quarrel between a valet and a hot-shot lawyer who offers money and is arrested for attempted bribery. When Gorman fakes an injury and accuses the detective of police brutality, Sgt. Stone puts his own badge on the line to help him.

A death-row inmate Joe Caslin points out the similarity between a current crime and his conviction, which in turn sets about a turn of events to save Joe.

An Internal Affairs investigation on fellow detective Bill Ehlers is done when he is suspected of stealing money recovered from a bank robbery. He refuses help from his fellow officers and sets out to find the robbers himself.

Jim poses as an inside man at the baseball stadium's payroll window to nail a gang of thieves disguised as security guards.

A deluded Korean War Veteran breaks out of an Army Hospital and stalks a beautiful housewife, whom he believes is a USO dancer he fell in love with during the war.

An argument leads to a senseless murder in an all-night diner, putting the officers on a trail of two thrill-seeking punks who are now plotting an extortion scheme against a woman.

Captain Nye is critically wounded in an elevator, Stone and Briggs must search for a well-dressed hit man before he makes a second attempt on the Captain's life.

During a spell of excruciatingly hot weather, Stone and Briggs turn up the heat to find two murderous muggers. Unbeknownst to Sam, they've forced their way into the home of Albie Froehlich, one of Sam's top snitches.

Bizarre death threats, an imagined murder, and sibling rivalry add up to a bizarre case which finds Sam and Jim trying to prevent a murder.

Jim's girlfriend Cloris introduces him to a man she says is her brother. He's really her ex-husband convict who's shaking her down for money to get out of town. He steals Jim's gun and badge and uses them to commit murder.

Stone's attempts to bust paramilitary leader Flagg are hampered by the man's embittered former second-in-command, who wants revenge for being thrown out of the group.

Jim is framed for bribery and murder as a part of a plot to discredit his testimony against a drug dealer.

Bull, a former football star is accused of murder, but Sam suspects that arrogant team owner is the real killer.

Jim is wounded and left for dead in the city's sewer system while chasing a burglary suspect, and Sam puts pressure on the crook, Layton, to try and find his injured partner.

Stone and another cop are critically wounded, Briggs must pursue a murderous punk who's passing bad checks.

Sam persuades the beautiful girlfriend of a brutal extortionist to stop acting as his punching bag and turn evidence against him.

After Jim shoots and kills an armed robber, the man's father retaliates by kidnapping Jim's father Dan.

Sam refuses to believe it, but all the evidence in two murders points to his former partner, now a hot-shot Lieutenant.

Sam refuses to believe it was an accident after the beautiful young girlfriend of powerful millionaire Adam Langley is found dead in his swimming pool.

Langley thwarts all attempts to investigate Betty Barnes's death, even going so far as to nearly kill Sam and Dan, so Sam comes up with a new plan which involves the tycoon's fear of germs.

A man suspected in an attack on a woman years ago is suspected of committing a similar near-fatal assault on another woman, but Sam is skeptical.

After syndicate leader Blaisie is taken into custody, his minions attempt a jailbreak with Dan as a hostage.

Frightened victims of high society burglars give false information to Sam and Jim, hindering their investigation. When the crooks pursue the victim's daughter at Marineland, the Squad must race to the rescue.

Sam is suspicious when deposed syndicate leader Harry Majeski offers to testify against his successor, Vic Durrant, and is then abducted from police custody during an ambush.

Sam is subjected to public scorn when he apparently kills an innocent teen while pursuing a robbery suspect.

A war hero, who saved Sam's life in Korea, thinks the smugglers he's aiding are trafficking uncut diamonds. What they're really smuggling is pure heroin and Sam must work to extricate his friend from the scheme.

Sam suspects that Martin Lynch, a suave security expert is behind murder and industrial espionage at an aircraft company.

A frightened builder is killed in an explosion after talking to Stone and Briggs, and Sam tries to shake Maitland a building inspector in the pocket of racket boss Koster.

Stone and Briggs are hindered by frightened residents of a tough waterfront neighborhood, as well as a gang of thugs.

A murder witness identifies Dan as the killer and his bizarre behavior hinders Sam and Jim's attempts to clear him. Dan is trying to protect his crippled ex-partner Tony and Tony's daughter Ani, who are being blackmailed.