48 Hours S38E03 - A Death in the Stairwell

After her husband is found with a fatal injury at the foot of the stairs, a woman is accused of murder and fights to clear her name. Alison Davis says she woke up to find her husband, Kevin, critically injured, and she insists he fell down the stairs. But police say an autopsy revealed inconsistencies that led them to a different conclusion. Alison Davis always maintained her innocence and was in the fight of her life to defend herself.