This was probably one of the most compelling episodes of Unforgettable to date. I'm not going to sum up the episode since the previous person did it so well... But what I am going to say is that the new character (the medical examiner) seems like a really interesting and compelling character. Her and Carrie really work well together, and I'm hoping she'll help Carrie to piece together her sister's murder.
Carrie's nemesis in this episode is also really great. He's intelligent, and he seems to understand that Carrie isn't just a normal cop. I really like where this is heading.