When the body of a young boy is found in the harbour, Ali tries to tie the case to the similar unsolved murder in 1977.

Ali investigates the 12-year-old murder of a ex-detective's daughter, which destroyed his career.

Ali takes on the case of a teen-aged Jane Doe, whom Tony has named "Tess," whose body was discovered 15 years earlier.

An ex-husband is suspected of a nurse's decapitation 20 years earlier, then a similar case surfaces.

Ali revisits the case of Barbara Taggert, a mother who was killed in a house fire in 1995 that was ruled an arson.

While investigating a 1995 murder, Ali and Tony come upon a new lead on a suspect in the 1968 murder of a sailor in his cheap hotel room.