Kate was devastated by the sight of her dead daughter, saying she doesn't want any kind of relationship with the other suspects. She left the station later that day with the coffin.
James was determined to interrogate Tom, Sarah and Dylan again in hope to find a trace leading to the killer. The assumption that Kate would've never killed her own daughter was highly doubted by the others considering it may put more suspicions on them as the killer.
James interrogated Tom first and asked him about his mention in George's testament. Tom replied that they were good friends and had a lot of businesses together. James asked if those businesses had something to do with Roger, and Tom said that Roger sold one of George's most valuable companies in a very low price, which was the cause of the harsh arguement between the two.
James told Tom that the only two people George mentioned in his testament except for Tom were Roger and Liz, who are both dead now, thus leading him to the obvious conclusion that Tom is the killer.
Later that day, Tom told Sarah that James is convinced he's the killer and if any new evidence won't be found, he'll probably be sent to jail in order to close the case. Sarah was shocked by that, saying she's going to expose James's corruption to the public.
The next morning as everyone prepared to return home, Sarah was missing. Tom and James went to look for her throughout the entire building until her body was found. She was choked to death, locked inside one of the interrogation rooms.
Suspect List:
Kate
Dylan
James
Tom
So... Who Done It?!
comment with your guess and add a reason if you like :)