The Crossing (2004)

While driving home in the country playing sex games with his gorgeous wife Liv by the cellular, the successful Andreas has a car accident and becomes crippled and impotent. His young wife leaves him and while alone in his big house, he receives the visit of a handyman from the social service. Wagner builds walkways and installs an elevator to facilitate the life of Andreas. Meanwhile Liv supersedes her trauma and returns home, and Andreas, unable to satisfy her sexual desires, proposes she has sex with Wagner. Liv becomes close to Wagner and discloses a dark secret from his past, and the stranger unravels the truth about him and his real intentions.