Nick and Sara seated themselves again behind the two way mirror of interrogation room number 1. Mrs Morton was seated calmly there waiting for Jim Brass to come and talk to her.

Meanwhile, on the other side of the room, behind window number 2, was Mr Morton. Looking less than calm he paced the room, also waiting for Jim Brass to come and talk to him. He had been less than happy at the warrant Nick provided to him for collection of his DNA and fingerprints. Nick was glad it was him and not Sara who collected because he got the feeling that he would have thrashed Nick if he thought Nick couldn't give back as good as he got, male or female.

He kept throwing glares at the window knowing that someone would be behind there but not realising that their attention was drawn to window number 1.

Jim Brass entered the room and took a seat opposite Mrs Morton.

"I hope you are feeling better Mrs Morton, I know news like this can be shocking even after all this time."

Sandra Morton nodded her head. While obviously still distraught, she was at least, calmer than their first meeting.

"Mrs Morton, I was hoping you might be able to clarify a few details for us if that is alright. Some of them may be personal but we really need your input."

Again she nodded, "Please, call me Sandra."

"OK, Sandra. You told us that Katrina didn't return home the night she went missing. Where were you that night?"

"I was at a benefit. I am on.. well used to be on the fund raising committee for junvinile diabedes. We had a benefit that night. I didn't arrive home until after midnight. I looked in on Katrina and she wasn't there. I know she was 20 years old but she would always let me know where she was and when she would be home. When she wasn't there I went down to the answering machine but there were no messages. That is when I started to panic and called James."

"Where was James? Still at the benefit?"

"No he didn't come that night. Had something else to do that night.. I… I can't quite remember… something to do with work I think."

"Katrina also wasn't at the benefit?"

"OH lord no. She hated those things. Hadn't been to one in years. They weren't COOL I suppose." She smiled as a memory of her young daughter danced it's way into her head.

"When she did used to come along everyone used to say how much we looked alike. We would wear our hair the same way and dress alike. Sounds stupid I know but I liked it when they told us that. We were lucky I guess."

Jim frowned and asked, "Lucky? How do you mean?"

"That she looked like us. No one knew it but she was adopted. James and I couldn't… well I couldn't have children of my own."

Nick and Sara shared a look. Mystery solved.

"I don't mean to get personal here but, how was your sex life?"

"It wasn't what is could have been. Unfortunately, not only could I not have children but I had a very low sex drive. James was very understanding. He said he was happy the way it was. So long as he was able to … be with me once a week or so, he said he was satisfied."

"Sandra, was there anyway that Katrina could have possibly discovered she was adopted?" Jim asked.

"Not that I could think of. But she was … different just before she… well, you know."

"Different how?"

"She argued with James a lot. They would always stop when I walked in the room but.. I could tell. When I asked about it James would say they were only talking politics and it got heated. Katrina used to agree with him… but … I never really believed her."

"We found a pre nuptial agreement in your husband's belongings. We gather from that document that you were the wealthier of the two of you when you entered your marriage."

"Yes, that's right. My family was one of the original gold families. We struck it rich about 80 years ago. James came from a very modest family but I did love him so. We were sickeningly in love. I didn't want to sign one but my father was the one who insisted on the Pre Nup."

"Sandra, were you aware your husband had another child? A biological son?"

Sandra looked up. "No, you must be mistaken. James wouldn't do that to me. He loved me. He assured me he was completely faithful to me."

"I'm afraid it's true. We believe Katrina became aware of him and she confronted your husband about it."

"No, James wouldn't. He knows what is at stake. I… I wouldn't stay with him if he was unfaithful. He knew that. He wouldn't want to throw that sort of money away."

Jim looked over at the window at the two CSI's behind the window.

"That's a weird thing to say." Nick commented. "Most people don't indicate the money is the only thing their spouse would lose."

"He knew he had a cash cow, and she knew she was the cow."

"She got what she wanted, a child, and assumed he would be satisfied with a once a week servicing and lots and lots of money."

"Never under estimate a man's libido." Nick nodded his agreement.