This film series follows the transformation of a heroic doctor into a dangerous predator: 1. A heart surgeon saves a drowning teenage girl and falls in love with her, leading to criminal actions. 2. The doctor's trial and new job at a university where his new relationship is threatened. 3. Working at a sleep clinic, the doctor finds a new victim to stalk. 4. Escaping from psychiatric prison, he hides and becomes attracted to a widow and her daughter. These films appeal to fans of suspense and thrillers, highlighting the dangers a predator poses. The emotional impact stems from dramatic tension and unpredictable storylines, eliciting reactions from alarm to anger. The series explores the fine line between love and obsession, trust and danger, captivating audiences with its dark themes.