New Lifetime movie "The Wife Who Knew Too Much" airs July 20, starring Nicole Unger as a wife investigating a hit-and-run.

"The Wife Who Knew Too Much," a new Lifetime movie airing July 20 at 8/7c, follows Lisa Clarkson, a football coach's wife, as her life unravels after her daughter's friend is killed in a hit-and-run. Lisa investigates the accident, which could involve the school's principal, star quarterback, or her husband. The movie stars Nicole Unger and can be streamed for free using trial offers from Philo, DirecTV, or Sling.