The final instalment of this three-part thriller from Olivier and Tony-award winning writer Conor McPherson. The series sees a chemistry teacher named Paula (Denise Gough) become embroiled in a dangerous game after a one-night stand with a man named James (Tom Hughes). In tonight's finale, Mac recovers from the attack but faces repercussions at work. He continues to delve into James's past, discovering stories of a troubled childhood. Meanwhile, as if things couldn't get any worse for Paula, she faces the possibility that Callum may never recover. Haunted by the danger James still poses, she resolves to confront him one last time - but this time, she is prepared for a fight.