Mackenzie becomes the victim of a grifter on the eve of her interview for Head of Homicide. Meanwhile, Church finds his career threatened when a journalist attempts to expose him in a newspaper article.
Angie faces one of her toughest cases yet when she has to develop a romantic relationship with a murder suspect and then coerce him into becoming an informant.
Mackenzie discovers the grifter who drugged her is linked to a senior colleague - someone who has good reason to want her out of the running for head of Homocide.
Danni has to protect former undercover cop Gary Edgerton, a reluctant key witness in the trial of a major criminal, and help him prepare for his court appearance.
Stone goes undercover as a hitman to investigate a woman who is organising a hit on her husband, while Mackenzie is dealing with hitmen of a different kind when she finds herself the suspect in a murder.
With Harry Love in a position to make his final move against Mackenzie, she and the Undercover Unit are forced to take desperate action, with tragic consequences.
Undercover teams up with Armed Robbery to bust a violent robbery ring. Church infiltrates the group but is forced to bow out when he is given a shotgun and told to rob a convenience store.
When a failed drug bust leaves the Undercover Unit with a dead dealer high class prostitute holding a couple of bags of cocaine, the Unit undertake an operation inside a busy brothel: Gotham City.
When an undercover operation causes the death of a young woman, Church and Angie are faced with the dilemma of saving one dangerous criminal from another.
Working with criminal profiler Vicki Quinlan and the new Head of Homicide Frank Callahan, the Undercover Unit investigate a serial murderer but their attempts to trap the killer leaves Mackenzie fighting for her and her best friend's life.
Stone heads undercover to expose a high powered businessman, but experiences a crisis of conscious when he discovers a young prostitute he has cared for is in danger as a result of his actions.
Church becomes convinced he is being stalked by a man who holds him responsible for the murder of his girlfriend, causing him to jeapordise the Unit's current operation, busting an illegal tobacco ring.
When the Unit try to nab a standover man for murder, Angie's relationship with informant Marty Engle results in a confrontation within the ranks and the Stingers having to face the fury of one of their own.
The Unit seems on shaky ground when Homicide attempt to charge Church with the murder of Denny Kaplan, but are devastated when Stone goes beyond the call of duty to save Church.
Mackenzie is faced with a choice between her personal happiness and her successful career when she becomes involved with a charismatic art thief who entices her into believing that love is more important than the law.
Oscar Stone's killer is brought to trial in a situation of high security. The accused is represented by a high profile criminal barrister, Ingrid Burton. That and the presence of a mysterious Mr. Brown in court, has the police on edge.
When Church goes undercover as an armed robber, he is busted by a young cop, who so impresses Harris, that he arranges for her to join Undercover for a trial period.
Church's undercover assignment results in the kidnapping of a drug dealer's son. Meanwhile, Chris finds herself on what appears to be a routine surveillance job at a video store but it proves to be anything but routine.
A middle-aged woman, Helen, brings a cardboard box into police headquarters claiming it contains a bomb. In fact, it contains something even more bizarre, that is determined to belong to her husband, Miles.
Church's hapless persuit of the coke-dealing Vidarl crew takes a turn for the worse when most of them turn up dead -- victims of a bloody armed robbery. There is however, one survivor, but there's a catch.
Church goes undercover on a building site to investigate Union corruption and the disappearance of activist Craig Shore. Matters are complicated when Ingrid Burton enters the equation.
Harris puts Church undercover on the construction site where Ingrid Burton's client, Steer, was murdered. Meanwhile, Church is convinced that Harris is corrupt, and goes to extreme lengths hoping to prove it.
Church and Angie continue piecing together links between Conrad, suspected drug kingpin Stig Endquist and known union basher Rick Tyson. Church suspects Harris of protecting these men.
Harris is clearly losing it and is convinced that his officers are out to get him. In his paranoid state, he decides it's time to do something about Church - kill him.
When drug boss Stig Endquist survives an attempt on his life orchestrated by Church and Harris, Church convinces him that the assailant was Stone's killer, Conrad.
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Top Gap
By what name was Stingers (1998) officially released in Canada in English?