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E1 Snakehead
The Undercover Unit is called in to investigate when eleven illegal immigrants are found dead inside a shipping container.
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E2 Rich Man's World
Church uses an informant to infiltrate a drug syndicate, with tragic consequences.
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E3 Beyond Redemption
Angie goes undercover at a halfway house to obtain evidence against a psychopathic killer.
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E4 Tell Me You Love Me
Church and MacKenzie pose as a married couple experiencing relationship difficulties as they investigate a murder.
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E5 Fool to Want You
Church becomes the prime suspect in a murder investigation when he moonlights as a private investigator.
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E6 Family Values
Church goes undercover in a bikie gang to expose a major amphetamine ring, with unexpected and tragic consequences.
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E7 Whatever It Takes
The future of the Undercover Unit looks uncertain when Stone is investigated for the shooting death of biker Chicken Lake.
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E8 Into the Darkness
In the aftermath of Bill Hollister's murder, MacKenzie grieves while Church tries to bring the killer to justice.
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E9 Foster Cops
Church and Danni pose as foster parents in an unusual operation to capture Australia's Most Wanted Armed Robber.
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E10 The Whisper Room
The Undercover Unit investigates a group of paedophiles who use an internet chat-room to procure their victims.
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E11 Feud
The Undercovers investigate an extortion attempt against a pharmaceutical company and find themselves at the centre of a long-term feud.
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E12 One of Us
Stone is recruited by an Assistant Commissioner to assassinate the Bomb-maker responsible for Bill Hollister's death.
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E13 Dog Eat Dog
The Undercover Unit stage an intensive investigation to nail the ex-police officer believed responsible for Bill Hollister's murder.
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E14 Slice
Danni's cover is blown and her career is threatened when an escaped criminal seeks his revenge.
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E15 Love Hurts
A case of mistaken identity results in Stone being recruited to assist with a major armed robbery.
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E16 Psychotic Episode
Strange guns, UFOs, and piggerists with glass eyes - it's all in a day's work for Church, when his only source of information for a possible murder case is a paranoid schizophrenic.
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E17 Closure
MacKenzie investigates a Private Detective who specialises in adoption cases, with the secret hope of locating her birth mother.
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E18 True Colours
MacKenzie makes contact with her natural mother and both women become embroiled in an Undercover operation to nail a mastermind armed robber.
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E19 Too Many Crooks
The Unit works with an undercover operative from Queensland to defeat a gang of amphetamine dealers responsible for a kidnapping.
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E20 Just Another Day
Stone is caught in a siege situation at a hospital when an armed robbery goes horribly wrong.
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E21 Reunion
Church's worlds collide when he has to attend his twenty year high-school reunion as part of a drug sting.
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E22 Do the Right Thing
As Church, Danni, Stone and Angie focus on a drug sting, MacKenzie is distracted by an invitation to apply for Head of Homicide - which would mean leaving the Undercover Unit.