The story was good, complicated enough, but still a predictable outcome. The thing that really stood out in this episode was Patrick Flueger's performance, it was outstanding, "Dr Huang" said it best: "He couldn't fake that kind of physical reaction" ... it looked genuine!
On the other hand, the girl's mother didn't really get to me in any way; the character was badly "acted". I think killing the father gave the plot a cold turn; it would've been a lot more dramatic if they kept him involved in the story.
Overall, a good episode, well written, well acted, a little predictable, but that goes for most of these series nowadays.