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.
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.
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 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.
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.
Frank gets personally involved in a seven year old case when a man comes to collect the personal effects of his father, who was awarded the Victoria Cross for his heroism during the Normandy Invasion in 1944.
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 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.
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 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.
