The third series of the gripping crime drama featured some very special guests - Coronation Street stars Nikki Sanderson and Bill Ward joined regular cast members Jemma Redgrave, John Hannah and Matthew Kelly.
Not only that, Russell Brand, Pauline Quirke and Tony Slattery also added to the star factor.
We joined the action with serial killer, Brian Wicklow (Kelly) behind bars. He's obsessed with DS Eve Granger (Redgrave) and has realised Jake (Hannah) has been helping police crack the notorious killer's crimes.
Meanwhile, DI Hazel Norton (Quirke) comes in to head up the detective team, which now includes DC Ajay Roychowdury (Ace Bhatti).
With a child killer on the loose, a murder at an army barracks and a baby kidnapping, the team must draw on all their experience and guile to solve the three cases.
