Quiet Kill (2004)

An attractive married woman and a member of the Country Club Tennis Set is being neglected by her workaholic doctor husband Jerry Corbin Bernsen Lonely and insecure Amy foolishly falls for the seductive charms of a much younger man Steve Sterns Nicholas Celozzi who is introduced to Amy by her good friend Sheila The love affair is very brief as she realizes that Steve has a dark sinister and obsessive side to his personality or is it personalities Amy tries to break off the relationship only to find that her adulterous lover has become her stalker She also fears that Steve is responsible for the numerous brutal murders of local prostitutes