Michigan court allows manslaughter trial for Ethan Crumbley's parents in groundbreaking ruling.

The parents of Ethan Crumbley, who killed four students at a Michigan high school, can face trial for involuntary manslaughter, according to a state appeals court ruling. The court said the murders would not have happened if the parents hadn't purchased a gun for their son or taken him home from school on the day of the shooting. Ethan Crumbley has pleaded guilty to terrorism and murder and could be sentenced to life in prison without parole. The Crumbleys' attorneys insist that what would happen that day was not foreseeable, but the evidence against them is serious.