So in fact..
This episode was actually good, but your network obviously missed out on something.
The original NBC network let users vote online considering the ending, and they showed the one with the most votes.
Guilty was 20%, (they thought it was rape). Innocent was 60%, (they thought it was consensual). Mis-trial was 20%, (they needed more information).
So just a little message to whoever-you-were, I'd just like you to give SVU another try, and I sincerely hope that you won't be disappointed. Although some episodes are better than others, if you had seen the ending of this episode, I'm certain that you would have had a different view on it.
No, they do not all end like this.
Once again, I sincerely hope that you give it another try. :)