1998

S4.E1 ∙ Snakehead

Mon, Aug 13, 2001

Mackenzie and Hollister are called to investigate a homicide at the docks. Church works undercover as a customs officer when the unit has been called in to investigate the deaths of 11 illegal immigrants found inside a shipping container.

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S4.E2 ∙ Rich Man's World

Mon, Aug 20, 2001

Drastic measures are taken to allay the suspicions of a drug syndicate and win their confidence. Meanwhile, Mac has to decide whether to accept a romantic proposition.

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S4.E3 ∙ Beyond Redemption

Mon, Aug 27, 2001

With what is feared to be a serial killer at large, the Undercover Unit is asked to gather evidence on a man recently released from prison after serving time for assault.

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S4.E4 ∙ Tell Me You Love Me

Mon, Sep 10, 2001

Mackenzie and Church pose as a feuding couple, while investigating the disappearance of a man while visiting a health spa where couples go to heal their ailing marriages.

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S4.E5 ∙ Fool to Want You

Mon, Sep 17, 2001

Moonlighting as a private eye for an old friend, Tom Barton, Church is labelled a suspect when Tom is found shot dead.

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S4.E6 ∙ Family Values

Mon, Sep 24, 2001

Church goes undercover as a bikie to expose a major amphetamine ring linked to The Living Dead biker gang.

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S4.E7 ∙ Whatever It Takes

Mon, Oct 01, 2001

The future of the Undercover Unit looks uncertain when Stone is investigated for the shooting death of a biker.

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S4.E8 ∙ Into the Darkness

Tue, Oct 09, 2001

In the aftermath of Bill Hollister's murder, MacKenzie grieves while Church tries to bring the killer to justice.

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S4.E9 ∙ Foster Cops

Tue, Oct 16, 2001

Church and Danni pose as foster parents in an unusual operation to capture Australia's most wanted armed robber, but ultimately get more than they bargained for.

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S4.E10 ∙ The Whisper Room

Mon, Oct 22, 2001

The Undercover Unit investigate a disturbing ring of criminals, who use an internet chat-room to procure their victims.

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S4.E11 ∙ Feud

Tue, Oct 23, 2001

The Undercover Unit find themselves battling a race against time when called in to investigate an extortion attempt against a pharmaceutical company.

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S4.E12 ∙ One of Us

Mon, Oct 29, 2001

A surprise turn of events provides the Undercover Unit with a tangible link to Hollister's murderer, while Stone finds himself recruited to undertake the most daunting of tasks.

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S4.E13 ∙ Slice

Mon, Nov 05, 2001

Danni's life and career is threatened when an escaped criminal seeks his revenge.

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S4.E14 ∙ Dog Eat Dog

Tue, Oct 30, 2001

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S4.E15 ∙ Love Hurts

Tue, Nov 06, 2001

A case of mistaken identity during a botched raid at a nightclub results in Stone being recruited to assist with a major armed robbery.

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S4.E16 ∙ Psychotic Episode

Mon, Nov 19, 2001

Following a spate of violent robberies, Church and the others are placed undercover as taxi drivers, in hope of catching the offender in the act.

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S4.E17 ∙ Closure

Tue, Nov 20, 2001

MacKenzie investigates a private detective who specialises in adoption cases with the secret hope of finding her birth mother.

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S4.E18 ∙ True Colours

Tue, Nov 20, 2001

Church tags an unconvicted robber/murderer in the hope that he will lead them to unrecovered bank funds, while Angie and Stone try to locate a missing accomplice. Meanwhile, MacKenzie has news on her birth mother.

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S4.E19 ∙ Too Many Crooks

Mon, Nov 26, 2001

The Unit works with an undercover operative from Queensland to defeat a gang of amphetamine dealers responsible for a kidnapping.

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S4.E20 ∙ Just Another Day

Mon, Nov 26, 2001

Stone and Gray are caught in a siege at a hospital when an armed robbery goes horribly wrong. Meanwhile, the rest of the unit need to try and gather information about the armed robbers to regain control of the situation.

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S4.E21 ∙ Reunion

Tue, Nov 27, 2001

Church's worlds collide when he has to attend his twenty year high-school reunion as part of a drug sting. Danni learns she is pregnant.

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S4.E22 ∙ Do the Right Thing

Tue, Nov 27, 2001

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.

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