October 10 2013, Thursday. 5.00 pm.

Riverside Railway Station.

Williams woke me up about half an hour later.

"You mumble when you sleep," she said plainly as she switched off the engine.

I didn't reply, mostly because I didn't know how to. I winced slightly as I got out of the car. The wind was exceptionally harsh for some reason. I buried my hands in my coat pockets as we began to walk towards the crime scene.

"The body's gone already, what do you think you can find here?" I asked the FBI agent.

"That's what I'm about to find out, Lieutenant."

She took out a pair of shades from her coat and put them on. But I knew better.

As she began to analyse the environment, I started to say, "You know, you shouldn't use them too often. They're not good for you." She gave me a puzzled look. "I'm talking about ARI."

She stopped what she was doing and walked up to me. "How do you know about ARI?"

"I have a cousin, he used to work for the FBI too."

"What do you mean 'used to'? What's his name?" she asked.

"His name's Norman Jayden. He was assigned to assist the Philadelphia police with the Origami Killer case." I found the last part difficult to say out loud. "He... died while he was working on the case."

"I heard about him too, he got killed while fighting Scott Shelby." I nodded. "I'm so sorry," she said.

"Don't be, he died in the line of duty. I think we've all expected this day to come sooner or later when we signed up for our jobs."

"That's one way to put it, I guess."

My phone suddenly rang. Williams signalled to me that she would explore the place as I accepted the call.

"Clayton Grant," I said.

"It's me, Stacey."

I sighed. Stacey was my ex-wife. We didn't exactly split on amicable terms. Hell, we couldn't even stay civil when we met face-to-face, especially so after she vied with me the custody of our daughter, Samantha. Her calling me was definitely not going to be a good thing.

"What do you want, Stacey?" I asked, rather annoyed.

"I have to go overseas for the next couple of days. I need you to take care of Samantha for the time being while I'm away."

It wasn't a request. There wasn't a question mark. It was a demand. And I hated people who demanded things from me.. Of course, I would love to have more time with my daughter. The longer her mother was away, the better. But of course, how could I pass up the opportunity to make her feel ashamed?

"God fucking damn it, Stacey. You just went on a trip last month with Chris!" Chris was her current husband. "And now you're going off again?! Christ, Stacey! I have a job and a life too, you know! I can't just fly around as and when you want me to! If you're so busy, maybe you shouldn't have fought with me for Sam's custody!"

There was a momentary silence on the other end of the phone. "I'll drop Samantha at your place in two hours," was all she said before cutting the call.

"I swear I'm gonna kill you someday," I muttered in annoyance. I punched in another number on my phone. "Come on, pick up..."

"This is Gwendolyn Grant speaking."

"Hey Gwen, it's me," I said.

"Clay? What's up?" my sister asked.

"Stacey's gonna be out of town, and she'll be dropping Sam at my place in two hours. I've got a major case, so I can't leave. I was thinking if you could help me out."

"Yeah sure, no problem. Leave Sam to me."

"Thanks, Gwen. I owe you one. I gotta go, see you later."

I killed the call and returned to Williams, who was still searching around. Hopefully there wouldn't be any more calls. I've had enough for one day.

"You found anything yet?" I asked.

"Yeah, as a matter of fact, I did." She gestured for me to follow her. "I found some footprints, a size 8."

"Could it have been from one of the officers?"

"Nope, it doesn't match with anyone from the database. Also, I've found traces of orchid pollen leading from the position where the body was found and towards the parking lot, growing fainter along the way..."

"So you're saying our killer simply drove in here with the vic's body and dumped him here, without anyone noticing?" I deduced. I was quite sceptical about the theory, but crazier things have happened.

"Well, there's only one way to find out."