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Season 1 Plot

Serving police detective, Chris, is provided with a startling revelation about an infamous, unsolved case that once divided the police when a local girl called Julie Mackie disappeared. Now, reeling from the news that his own daughter has gone missing, Chris is approached by a journalist who tells him that fatal mistakes were covered-up in Julie’s disappearance. Revisiting the case, Chris uncovers a series of undeniable errors, corruption and unbridled ambition.

Six Four Season 1 aired on March 30th, 2023.

Season 1 Episodes

1. Episode 1

March 30th, 202345 min

DC Chris O’Neill is approached by a journalist about a cold case involving a missing girl. His own daughter is also missing, and his wife Michelle goes to London to search for her.

2. Episode 2

March 30th, 202346 min

Pauline Wallace receives a ransom call. Chris discovers a link between Annabel’s kidnapping and the supposed cover-up in the Julie Mackie case and Michelle confronts Piers.

3. Episode 3

March 30th, 202346 min

An unexpected visitor confronts Chris with the consequences of Michelle’s secrets. A visit to Gary McLean’s killer brings Chris closer to the truth and Annabel faces her captor.

4. Episode 4

March 30th, 202345 min

Michelle returns to Scotland and accompanies Chris in search of Annabel. Robert and Mackie face off as the truth behind Julie Mackie’s disappearance threatens to come out.