Claire Dennison, a successful advertising manager, is married to psychologist Jonathan and seemingly living a perfect life. However, Jonathan's lack of passion in their relationship frustrates Claire. She is encouraged to fantasize with her husband to reignite their passion, leading to a role-playing game where she pretends to be a sexy Italian. When Claire travels for work, she discovers Jonathan's secret life in a hotel lobby, and they have a passionate encounter. They schedule another meeting, but Claire soon discovers that the man in her bed is a stranger named Simon Phillips, a psychopath obsessed with her, threatening to destroy her marriage.
Impulse
A woman has a spontaneous affair with a man who bears a striking resemblance to her husband, only to discover that her lover is a dangerous and controlling psychopath.