Episode 4

John is full of regret over his friendship with Tommy and attempts to voice his suspicions to Fiona, who feels she needs space from her husband. However, she soon learns more than she bargained for when Catriona arrives to deliver a stark warning about Tommy. As Fiona's frustrations with John reach boiling point, they culminate in a confrontation with Tommy that spirals dangerously out of control and leads to a startling confession.