In March 2015, it was announced that the BBC had commissioned a third series of The Fall. Cubitt stated that this series was conceived "in the hope of further exploring the characters and themes that are at the heart of [the drama]". The episodes are expected to air in 2016, with Cubitt stating he has already envisaged how the show's third series will conclude. Carol Moorhead replaced Julian Stevens as second producer of the third series. Filming took place in Belfast between December 2015 and April 2016. The third series will get an exclusive look at the Edinburgh International Television Festival on 25 August 2016 and will premiere in autumn of the same year.
Gillian Anderson returns as Detective Superintendent Stella Gibson. She has arrested Spector but will he survive the gunshot wounds sustained in police custody? Will he ever face justice?
Paul Spector is rushed to Belfast General Hospital where Dr Joe O'Donnell, nurse Kiera Sheridan and the staff engage in the blood-soaked fight to keep him alive. News of Spector's arrest and life-threatening injuries reach Katie and she plots to help him. With the powers that be questioning Gibson's handling of the case, her determination to get a conviction is tested to the full.
Gibson and Burns are hauled over the coals by the police ombudsman and the policing executive for their conduct and handling of the case. When Spector's name is released to the press as the arrested suspect in the Belfast Strangler case, his wife and family are forced to deal with the consequences. Katie, enraged at not being allowed to see Spector and at the media's treatment of him, decides to take matters into her own hands. All the while nurse Kiera Sheridan and the medical team continue to fight to keep Spector alive. But even if he survives, will he ever be fit enough to stand trial? And do Gibson and her team have enough evidence?
As Spector's health stabilises, his legal team, lead by Sean Healy, move into action, determined he will never stand trial. Detective Superintendent Stella Gibson discovers evidence that there may be more victims. Keen to get Spector back into the justice system, Gibson speaks to August Larso,n the consultant psychiatrist who will be assessing Spector. Sally-Ann reaches breaking point.
Gibson comes face to face with the depths of Sally-Ann's desperation, while Burns has to confront his guilt at pursuing Sally-Ann as a conspirator rather than a witness. Gibson and Dr Larson clash over their different view of Spector - patient or prisoner? Meanwhile, Anderson and Ferrington are dispatched to London to discover if Spector can be linked to an old murder there.