Great story and great sacrifices make this a plot full of jeopardy for Stabler and the victim of the father.
A good first act quickly puts us in the middle of a the murder/rape of a normal well thought of young woman. The apparent barbarity of the attack will make you side immediately with Stabler who does a great job of hook our emotional tendons into his way of thinking. This sets up an intriguing story of mixed emotions as we discover the apparent young woman was not what her fathers view of her was. Furthermore, the dynamic of submission to her brutal antaganist is well demonstrated by the script, and the acting. Stabler has a good few scenes in the middle act that provides a good source sympathy which setups up for a truly tragic finale - one that LO:SVU does very well.
A superior episode from this franchise.