Accused: Guilty or Innocent?

Killed My Wife or Staircase Fall? (3x9)

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When a mother is found fighting for her life at the bottom of the stairs of her home, suspicion falls on her firefighter husband. The prosecution allege she was the victim of a devastating assault. The defense claim she sustained her injuries by falling down the stairs. With life in prison as a possible sentence and hidden secrets revealed, was this murder or an accidental fall?