As a mystery sniper terrorises Melbourne, forensic psychiatrist Jane Halifax refuses to join the police Task Force hunting the killer – until a murder close to home changes her life forever.
As the shooter claims two more victims, Jane Halifax suspects a killer from her past is responsible for her husband's murder.
The Task Force infiltrates a group of far-right extremists over the ongoing sniper attacks. Jane is suspicious of Mandy's growing involvement in Zoe's life.
Jane makes contact with Task Force's prime suspect, as the Task Force discovers a vital clue linking Ben's murder to the serial killer.
The Sniper's campaign of terror escalates when he targets the Police Minister and delivers an ultimatum to the entire city; Jane's investigation into Ben's murder takes an unexpected turn.
Jane discovers the true identity of the serial killer terrorising the city. Task Force boss Tom Saracen is critically injured in an ambush.
Jane Halifax confronts the shooter as he prepares for an attack on the entire city; Mandy confesses to the shocking truth behind Ben's killing.
