James Lye is back on the team and Annabelle Francis joins the cast. Mike (Lye) is still dealing with Elaine's murder from the last season. Sarah is like a breath of fresh air.

Sean partners Sarah in a ‘dog-man’ case, Mike and Kim go in search of an underwear thief, and Su Lyn tries to get Herbert to see his mother.

Sparks fly between Mike and Kim when they team up on a case together. Meanwhile, Sarah gets Herbert to loosen up as he, softening to Su Lyn's attempts to reconcile him with his family, finally makes contact with his brother.

James Lye is back on the team and Annabelle Francis joins the cast. Mike (Lye) is still dealing with Elaine's murder from the last season. Sarah is like a breath of fresh air.

James Lye is back on the team and Annabelle Francis joins the cast. Mike (Lye) is still dealing with Elaine's murder from the last season. Sarah is like a breath of fresh air.

Mike and Kim investigate the murder of a rag and bone man. While working on a drug-related case, Sarah finds herself attracted to Inspector Seah, a narcotics officer.

Mike and Kim try to nail a man who's been going around, threatening people with an HIV-tainted needle. Also, Mike finds out that Kim likes him but turns her down.

Alan and Herbert investigate a case involving a teenage girl gang. Meanwhile, Sean sets into motion the undercover plan to infiltrate a drug syndicate and find out who the top dogs are.

Mike and Sarah investigate a businessman's murder and discover that some foreign workers had been paid to kill him. Meanwhile, Sean helps Martin with some drug deals to win the latter's trust.

Herbert and Alan investigate the murder of a man who organises the Children Karaoke Competition. A dismayed Alan learns that he's not being promoted.

Sean is told to kill an informer, which he does so as to gain respect from the gang. But it's also the start of his emotional downfall.

Sean has nightmares after killing an informer and, in his desperation, turns to drugs. Mike suspects something is wrong with Sean. Meanwhile, Kim and Alan draw closer to each other.

Mike investigates a murder where the abused wife is suspected of killing her husband. Sean manages to crack the syndicate and discovers that the corrupt officer turns out to be Inspector Lee. Meanwhile, Kim invites Alan out for a date.

Alan confides his disappointment at being passed over for a promotion to Kim, who thus feels closer to him. Mike takes Sarah out so as to help her get over Sean's betrayal. Meanwhile, Sean gets addicted to drugs.

While investigating a case with Alan, Sean loses control of himself and his drug problem is exposed. Meanwhile, Helen tries to court Mike who turns her down.

Sean goes on cold turkey and Kim helps him get over his addiction. Meanwhile, a spurned Helen threatens Mike.

Alan and Mike investigate a case where a series of women are being killed. Meanwhile, a spurned Helen freaks out and Mike tries to contain her, but to no avail. Later, she goes missing.

Mike and Sarah investigate the case of a dead abandoned baby. Meanwhile, Sean suffers a relapse and starts drinking again.

Mike and Sarah investigate the murder of a man who was found strangled in the restroom of a rundown hotel. Sean seeks help from Alcoholics Anonymous.

Mike and Sarah investigate a series of brutal murders of young women. Eventually, they uncover a con operation that lures women with fengshui and black magic.

James Lye is back on the team and Annabelle Francis joins the cast. Mike (Lye) is still dealing with Elaine's murder from the last season. Sarah is like a breath of fresh air.

A teenager holds a woman hostage in a supermarket. When Kim fails to talk him into releasing his victim, she shoots him dead. A police inquiry into the matter eventually lets Kim off the hook, but she's stabbed by an assailant on her way home.