I thought the killer all along was Dr. Grant. The hired assasin did not kill Barbara Grant the first time. Why would he the second time? He was just wanting money. I did not think Dr. Grant's girlfriend killed his wife. She would have killed Barbara herself the first time and not hired it done. The obvious killer was Dr. Grant. I can see how the jury was hung on the first trial. Interesting this was based on a true story. I give this episode 5 stars!