Air date: 2016-01-04

Runtime: 60 min

Nikki arrives at a murder scene to find it's a carbon copy of a case in her past.

Air date: 2016-01-05

Runtime: 60 min

Nikki becomes the prime suspect after a former colleague is murdered.

Air date: 2016-01-11

Runtime: 60 min

A young British Muslim returns to the UK, and concerns over her intentions soon escalate.

Air date: 2016-01-12

Runtime: 60 min

Thomas must put his personal feelings aside as the team track down Begovic.

Air date: 2016-01-18

Runtime: 60 min

An ex-convict is killed and suspicion lands on a recently released child killer.

Air date: 2016-01-19

Runtime: 60 min

Further victims are killed and a distinctive modus operandi begins to become clear.

Air date: 2016-01-25

Runtime: 60 min

The shooting of a teenager in an armed police operation triggers a series of murders.

Air date: 2016-01-26

Runtime: 60 min

Jack leads the hunt for suspected killer Bruno, the brother of the shot teenager.

Air date: 2016-02-01

Runtime: 60 min

A family murdered at a picnic leads the team to the female victim's estranged husband.

Air date: 2016-02-02

Runtime: 60 min

As Nikki and Jack move closer to the truth, their lives are thrown into mortal danger.