Redrum (2007)

A completely pedestrian yuppie couple needs therapy because their life in general is so boring for them, including their own relationship. By accident they find the stimulus to make life exciting. Brian Digs (Kenny Young) and his wife Tanya (Jill Marie Jones) need marriage counseling, but their traditional therapy seems to go awry. One day Brian finds sexual arousal easy to achieve after he commits an accidental murder. In fact, he becomes quite a stud. His wife, turned on by the actions, also transforms into a femme fatale, literally. Drawing on other notable movie murders, the couple seems to make their own killing spree the penultimate homage to movie mayhem. Their series of victims often seem more than worthy of being assassinated.