A store clerk is murdered after Dean Bulmer is released, and Ali is blamed by the other detectives because she questioned the validity of the case.

Ali and Mickey are called to the scene when a mutilated body is discovered by a man driving his SUV off-road. Sam later identifies the body as a man Dean Bulmer was convicted of killing on the basis of another body Sam mistakenly identified.

The investigation into a prison inmate's killing by a guard who was under the care of a high-profile self-help counselor is complicated by the fact that Mickey is also a client of the counselor. Christine's brother is brought in on a petty beef, and she arranges his release.

Ali and Frank are stuck on a quarantined Polish ship while investigating a crew member's suspicious death, which resembles the death of another crew member whose body washed ashore four years before.

A pedophile comes forward and confesses to the murder of a boy 20 years ago, and he then tries to claim the reward the parents had put up to find their boy's killer.

Ali and Frank interrogate Danny Cullen, a former undercover cop, about the murders of two bikers and an RCMP undercover officer.

The building is locked down after two prisoners overpower their custodians, take a weapon, and shoot an officer.

Frank investigates the death of a forgotten war hero. Ali applies to become a Big Sister after questioning her value as a cop.

Frank and Nicco are stripped of their badges over the drug probe.

Mickey and Ali investigate the connection between a woman's murder outside an antique shop and a car chopping outfit. Police corruption may have played a role in drug-gang activities.

Ali and Mickey look into a three-year-old suicide case when a letter surfaces taking credit for pushing the victim off a bridge.

Mickey is severely beaten while trying to make an arrest with Ali. Frank and Nicco investigate a death within a polygamist family.

After the evidence against a rape/murder suspect is thrown out on a technicality, Frank must find another witness, and he must persuade the witness to come back to Canada to testify.

Ali and Mickey reopen a 12 year old case, which was originally judged a murder-suicide, based on the word of an arrested drug dealer. After a man reports being attacked by a dog, Frank investigates whether the dog-owner earlier had killed his wife by ordering the dog to attack her.

Ali, Frank, Nicco, and Mickey try to connect a cold murder case to a massage parlor that employs immigrant women as indentured servants.

Mickey and Ali check out the story of a career criminal who wants to be sent back to prison for murder. Frank looks into a case that involved Nicco back in his undercover days.

Ali works with a visiting Russian detective to connect the dots between the Russian Mob and a traffic accident that killed a Russian hockey player.

An unidentified body is found at the forensic body farm, and Ali and Mickey are assigned the duty of identifying it and determining manner of death.

Frank and Ali reopen the case of Leonard Larkin, whose son was acquitted of his murder and now claims his sister killed their father, and that her husband gave her a false alibi. Mickey's case is referred to Homicide.

Firemen discover 8 bodies wrapped in plastic in a house. Mickey falls under suspicion when Bailey's wife is murdered, and Bailey doesn't back up Mickey's alibi.