Webb investigates the brutal beating of businessman Kevin Hewlitt, who is found unconscious in his kitchen by his wife, Sandra. The investigation provides little information as to the motive for the attack, and very little description of the assailant is given by those who saw him. CCTV footage shows Sandra having intercourse with another man in her car a week before Kevin's attack, and she later admits to Webb that she and her husband were no longer in love. Lennox tries to break the alibi of Hewlitt's business partner Paul Wilcox, convinced that he is somehow involved in the attack. Webb makes the decision to mix business with pleasure as he begins to fall for Sandra.