The latest in a series of armed robberies on super-markets leaves a young cashier possibly paralysed when the thieves take her hostage and then push her from their speeding car to slow up the pursuing cops. The cars used by the robbers are specially modified "hill racers", leading to the local hill racing champion, an old friend of Hooker's, being wrongly arrested as the prime suspect. Hooker must prove his innocence by speeding after the real culprits...

Responding to the alert of an armed super-market robbery, Romano and another Officer are wounded when one of the robbers opens fire at them. Romano blames a female Officer on the scene, who he believes to be guilty of cowardice in stopping the shooting, but with contradicting accounts of just what happened in the incident, Hooker angers Romano and several Officers when he announces he is to act as defence for the Officer in the upcoming trial. The move jeopardises both Hooker and Romano's partnership and their friendship, and the fact that the Officer had previously been brought up on a similar charge does not help her case; but was she actually the one to blame on this occasion?...

While on a prostitution sting, Hooker spots veteran vice officer Daniels' car parked outside a motel, and goes to investigate just as the officer is shot by an assassin. Both the gun-man and the prostitute Daniels was meeting with flee the scene, and the officer's superior reports that Daniels wasn't there on Police business, and what's more, was found with money suggesting that he'd been taking bribes. But Hooker is adamant that the veteran officer is innocent of the accusations, and has two days before the funeral to clear the officer's name and find out what he was really doing at the motel. The girl Daniels was meeting with holds the key to the true circumstances, and Hooker forces her ex-roommate, a reluctant, wise-cracking ex-prostitute, into helping him track the down. But the girl is hiding in fear from the dangerous porno producer who was involved with the officer's shooting...

Following an execution-style murder connected to a drug racket, Hooker joins forces with ex-partner and personal friend Jim Cody to solve the killing and put the drug ring out of business. But as they investigate the case, it becomes apparent that Cody's own daughter is a heroin addict and involved with key members of the drug ring...

An attractive woman named Teri, whom Hooker meets when giving a speeding ticket, finds that her friend has been robbed and raped, and herself is attacked when she unwittingly stumbles onto the scene, until Hooker comes to the rescue. She aids him as they try to identify the violent gang behind the attacks, and in their together, they quickly fall in love, but things take a nasty turn when the gang track Teri down and badly attack and rape her. The result of the attack takes its toll on her and Hooker's relationship, and causes Corrigan, Stacy and Romano to become concerned that Hooker's fierce pursuit of the gang is being clouded by personal feelings and the want for revenge...

Dani Starr is an attractive Hollywood Detective who lives alone, dresses snazzily, and always gets the job done. While en route to Hollywood to deliver a captured jewel thief, Hooker and Corrigan are ambushed by the thief's men, who free their leader. Hooker teams up with Dani Starr to find the sprung thief, who is the prime suspect in the murder of a porn film producer. As they search for leads, they find that there is a Mob connection; Hooker learns that Dani's husband was previously murdered by the Mob, and she is determined to find those responsible...

While Hooker is investigating a violent supermarket robbery, his father, himself a retired police officer, arrives unexpectedly. Hooker is surprised at sudden arrival, and his father, who is in somewhat shaky health, ends up helping track down the supermarket robbery gang – but the one last case has a deadly outcome for the senior Hooker...

Hooker becomes involved in an F.B.I. drug bust operation, a ""sting"" which leaves an undercover Detective critical in hospital, and the drug ring's middle man shot dead by the front man, who walks away with the $100,000 sting money. With the ploy following the same pattern as several previous identical ""rip-offs"", Hooker and a Federal agent join forces to put a halt to the big-time drug runner's scam, but their methods in putting the racket out of business clash...