Just as a side note, anytime I write anything that's in Russian the rough translation can be found at the bottom.

Elena Alexandrov

Ken and I walked into the station that morning, and were immediately swept up by Captain Yeong. "Alexandrov, Greene, my office" she said quickly. Ken and I exchanged equally confused looks. We followed her into her office, close on her heels. "Sit" she snapped, sitting at her desk. We obeyed. She grabbed the file Ken and I had been Looking at the night before, offering it to Ken. "Captain, I do not understand" I said "We found out who killed those two children. That means the case is closed, yes?".
She shook her head "Normally, yes. But last night a man was killed, as was his younger sister. Both were given extreme amounts of arsenic, and both died from arsenic poisoning before they were even found".
Ken opened the file again and I peeked over his shoulder. There was a boy of about twenty sprawled across the floor, a trickle of blood pouring from his mouth. His dark haired sister of about eighteen was lying next to him.
"Both were found early this morning by a friend of the man. There was no clear evidence of a struggle" she said. "They were a brother and sister living together after the death of their single mother, no father figure came forward, so the older brother took the sister in. They were both killed in their home" she said.
"But Marcus is dead. How can this be?" I asked.
Captain Yeong sighed "That isn't all. Matthew Nelson, the third victim and his four year old sister, Ashley, went missing this morning. Twelve year old boy, no sign of a struggle".
"But how can that be?" Ken asked "He's recovering from arsenic poisoning, he couldn't just walk out".
"But that's what appears to be what happened. He's had no visitors, he's in a secure ward, I don't think there's any other way".
There was a long pause in which no one spoke, and I finally said "Then we should go check out the crime scene. We might find something". Captain Yeong nodded as a dismissal, and Ken and I walked out.

Ken Greene

Fifteen minutes later Elena and I were standing in the living room of the murder victims. Elena bent down to examine the girl, who was lying stretched out as if in her last moments she was trying to go for help.
"What are their names?" she asked softly, as if asking the victims themselves.
"Rosie and Randal Parks" I answered. I was surprised by the softness of her tone. I wondered this was her first crime scene, until I noticed her necklace as she leaned over the body. It was a small gold star of David. There was a similar one around the girls neck, and I wondered if she felt a connection to the girl because she saw herself in her. Over the next few hours we searched for any connection between the murders, any clues. Kai came in and collected the bodies later, leaving only a white outline on the dark carpet. Elena seemed more reserved than earlier, but I noticed she once again tucked her small star of David inside her shirt. After we were done and got all we could from the place, which was nothing until we got the DNA and fingerprint results back, Elena reminded me of what she said earlier. We swung by the place, and I saw it was a small and rather shabby coffee house. I followed behind her, and the heavyset waitress smiled warmly at Elena as she entered, greeting her with a "Dobry den".
What Elena said next was in a different voice. Her words seemed to roll of her tongue easier, coming much more naturally "Privet Katrina. Dobry den, Kak vashi dela?".
The woman smiled "harosho, a kak ty?".
Elena smiled back "neplokho". I hoped the woman didn't say anything to me, as I was totally lost in the conversation. "eto vash partner?". She asked, looking at me.
"da, eto Ken. On ne govorit russkiĭ ili ukrainskiĭ, khotya. On ne smozhet ponyatʹ vas." Elena said. The woman nodded and walked behind a door that obviously led to the kitchen. I followed Elena to the back of the coffee house, and when she sat in a booth I sat across from her.
"What did you say to her?" I asked, knowing she used my name.
"She asked if you were my partner, and I told her yes but you didn't speak Russian or Ukrainian" Elena said.
"You know her well?" I asked.
"Katrina and I grew up together, she is the reason I chose to come to San Francisco. There were very few children in our village. Very few people actually. It's a small place in eastern Ukraine, just for people of the Orthodox Jewish faith. Most of the people living there are from Russia, so my Russian is better than my Ukrainian" she explained. She leaned in closer to me, saying "But enough about me, I want to know about Annie". So I told her, everything. How Annie only found out she was sick after it was too late. How I had fought with her father that very morning. How I had loved her. There was a moment in which Elena studied me as if I were a mildly entertaining television show. Finally she said "Ken, you
say you loved this woman?". I nodded. "May I asked what happened?".
I wasn't sure what she meant "What do you mean?".
"You said you loved her, not that you love her". Elena pointed out.
"Well, she's gone" I said simply.
Elena sighed "Ken, let me show you something". She pulled up the sleeve of her shirt, showing me something on her wrist. A block of strange symbols ran vertically across her wrist in jet black ink. 'Я несу твое сердце мне'. "It says 'I carry your heart me me'" she said "My sister, Sofia, has the other half on her wrist. Her's reads 'I carry it in my heart'". She pulled her sleeve back down, hiding the small tattoo. "Sofia is the one who picked it out. She wanted to get matching ones when she turned eighteen and was visiting me in Arizona a few years back. It took forever to find someone who would write it in Russian, but do you know why I did it?" Elena asked me. I shrugged. "Because she is my baby sister, and I love her more than anyone else on the planet". She paused for a moment "Sofia has been dead for three years. She was killed in a car accident, but that does not mean she is gone. I believe she is waiting for me, and until I see her again I will carry her heart with me". She looked at me seriously "And you can carry Annie's heart with you also, Jewish or not". She slowly pointed to her chest "You can carry it in your heart".

Sorry if this seemed a little cheesy :P So you don't have to look it up with a translator, here's roughly what the conversation at the coffee house went:
"Good day".
"Hey Katrina, how are you?".
"Fine, and you?".
"Not bad".
"Is this your partner?".
"Yes, this is Ken. He doesn't speak Russian or Ukrainian though. He might not be able to understand you".

*Katrina nods*