When a Homicide investigation into the disappearance of a teenage babysitter fails to reveal any useful evidence, Chu...

Someone is looking to hire a hitman, so Church goes undercover. Surprisingly, his client is a woman who claims that h...

A policeman has been shot. Undercover is called upon to infiltrate a suspected Romanian gang, but they don't deal wit...

Undercover is called in to find a serial killer. When Angie's cover is blown, Kaye becomes her replacement. Her first...

Following Kay's disappearance, the Unit goes into damage control, scrutinizing the surveillance footage and following...

Whilst undercover, Church is employed by a brutal mercenary, Cameron Fraser, to assist in the abduction of a young gi...

Following the drug-related death of a young clubber, the unit attempts to crack a large scale Ecstasy racket.

MacKenzie is put undercover on the witness protection scheme to befriend a victim of attempted murder because of her ...

While taking part in a buy/bust, Church and his dealer inadvertently get caught up in a siege instigated by three tee...

The Professional Integrity Unit investigates undercover over claims of corrupt handling. After evidence leads to Rocc...

Church is forced to drop his longtime informant, Benny. Benny is outraged, but as a last hurrah, he gives Church info...

Working undercover with bikies, Church sets up a buy/bust which turns sour after Stone is bashed and falls into a com...

After Stone is nearly shot during a meeting with a dealer, Mac is worried about Stone's well-being when an informant ...

The Unit goes undercover to locate a charismatic prison escapee, Kane, who accuses the police of wanting him dead rat...

Stone and Angie go undercover to infiltrate "Mother Earth," a radical environmental group suspected of stealing explo...

Church encounters Stone as part of the environmental extremist group. Stone wants to report to the unit but Church, d...

Someone is killing prostitutes and when a second woman is found murdered, MacKenzie and Angie go undercover at a brot...

When Church goes undercover to investigate a murder, he inadvertently ingratiates himself with the Rossis, a criminal...

With the help of the unit, Church manages to impress Dino Rossi and weaken the position of his right-hand man, who is...

With Church recruited by the Rossis, Angie goes undercover to investigate one of Dino's contacts. Church is falling i...

While the Unit learns of Church's relationship with Christina, Church is forced to come to terms with Christina's inv...

Information comes to light that someone is trying to sell Dino details about Church. With his identity revealed, it i...