Stingers

When a Homicide investigation into the disappearance of a teenage babysitter fails to reveal any useful evidence, Church and Angie go undercover to infiltrate a sinister, criminal family. The Unit is faced with a race against time to prevent the killer from striking again.

When Undercover learns that well known criminal, Travis Winter, is the go-between in the hiring of a hitman, Church goes undercover as a gun for hire.

A policeman has been shot. The prime suspects, a Romanian gang. The sole witness will not speak to the police.

When a serial killer takes a third victim, Undercover is called in to find the killer before he strikes again. The killer is clever, he leaves no clues, but likes the bodies to be easily found.

The Unit goes into guilt-ridden damage control following Kaye's disappearance, scrutinising the surveillance footage and following up the few leads they have - a process that provides an unexpected lead.

Whilst undercover, Church is employed by a brutal mercenary, Cameron Fraser, to assist in the abduction of a young girl at the centre of a bitter custody battle. Fraser is a highly skilled specialist, who has a similar training to Church.

Following the drug related death of a young clubber, the Unit attempts to crack a large scale Ecstasy racket. Their target is the ring leader.

MacKenzie is put undercover on the Witness Protection Scheme to befriend Carol Jamison, who was nearly murdered because of her connections with a leading politician suspected of corruption.

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

The Professional Integrity Unit, lead by the tough Vic Slater, take over the Factory when Undercover is investigated over claims of corrupt handling. The Unit are outraged by the invasion, but Rocca orders his team to let Internal do their job.

Rocca forces Church to drop his long term informant, Benny, after Angie is put at risk during a drug bust. Benny, who has become more friend than informant to Church, is outraged.

Working undercover with Bikies, Church sets up a Buy / Bust involving Stone. The deal goes sour as Stone is bashed and falls into a coma.

Stone is nearly shot during a meeting with a dealer. The Unit are concerned for his well being as he pays a compulsory visit to a police psychiatrist.

The Unit goes undercover to locate a charismatic prison escapee, the media-agile crim Bobby Kane, who accuses the police of wanting him dead rather than recaptured.

Stone and Angie go undercover to infiltrate "Mother Earth", a radical environmental group suspected of stealing explosives for terrorist activities.

Church joins Fielder and his group of environmental extremist in their terrorist masterplan, and is surprised to encounter Stone, already undercover with the group.

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

When Church goes undercover to investigate a murder, he becomes involved with the Rossis, a criminal family currently the target of an independent inquiry.

Working deep undercover, Church attempts to infiltrate the Rossi family hierarchy - Bruno, the head of the family, his son, Dino, and their menacing right-hand man, Terry Collis.

With Church recruited as Dino's right-hand man, his first task is to eliminate one of Dino's rivals - a problem which the Unit help him resolve.

The Unit is concerned Church may have crossed the line, so MacKenzie orders Angie and Stone to tail his every move.

The Unit continue their investigation into the Rossi family, with Church now on the other side.