Callum O'Connor believes that he is entitled to his former wife, Lisa's, inheritance. Her new business venture, The Pen and Pastry, that she shares with her two friends, Tanya and Rita, is under threat as Callum unleashes his fury. After several failed threats, he enlists the help of petty criminal, Billy Turner, to kidnap Rob, their employee, a young student baker. After leaving Rob for dead, he flees to his childhood home, Belfast, where his sister Siobhan, reluctantly finds him a place to stay in the Mourne Mountains. DS Short and DC Baker track him down and the chase begins.

When teacher, Tanya Masters, leaves her abusive, unfaithful husband and escapes to Italy, she has no idea that the paradise she is seeking will lead to terror. Her aunt welcomes her into her home which she shares with her partner, Gino, and where Tanya spent her summer holidays as a child. When she begins to rekindle her relationship with her childhood friend and Gino's son, Carlo, Tanya unwittingly involves them all in a sinister and terrifying plot. As her stalker closes in on her, there is one witness who is overlooked by everyone. Investigators Rossi and Gallo, assisted by eminent Criminal Psychologist, Professore Moretti, are baffled. Until, that is, they begin to get ahead of the game.