The evidence collected from Ethan Crowley's car was slowly being processed. It was now almost 6 a.m. Danny felt that his eyes were drooping staring at the computer screen. Mac came in and looked at him.

" Danny?"

Danny jerked up and looked at him. Danny felt like he was half asleep.

" Sorry Mac. This is taking time."

" Any word from trace yet?"

" Not since I turned in the evidence. I was just about to run these prints."

Mac didn't like what he just heard.

" You haven't run them yet? We collected those hours ago."

" I went back to the car. I found blood traces on the seat belt and something else, could be skin traces. I sent those to trace as well. We made need to check the car again. That car was a mess."

" We'll see to that later. For now, let's run these prints."

Danny just nodded his head. Inside he was exhausted and looked forward to going home and getting some sleep.

Mac looked at the screen when a match came up for one of the prints.

" Clarissa Wallace," Mac said," No criminal record, but works as a volunteer at Mercy hospital, which explains why her fingerprints are in the system."

" She lives in Manhattan, not too far from our vic."

Danny put through the next set of prints and got another match.

" Alexander Crenshaw, arrested once before for drunk driving and disorderly conduct. Works as a volunteer firefighter. Also loves in midtown Manhattan."

Mac only nodded his head. The next set of prints didn't come up with anything. A few minutes later, one of the lab techs came in with some results from trace. The results from the hair that was found came up with a result and the blood on the seatbelt also came up with a match. The blood was Ethan Crowley's and so were the skin traces.

" The hair sample that was found in the car belongs to a Joelle Richardson," Danny said.

" We've got some people to talk to. You go check on Alexander Crenshaw and I'll go check on Clarissa Wallace after I go check on Sid."

" You got it Mac. I'll call Flack too and give him the update."

As Mac was headed to the M.E.'s office Stella came up.

" From what I've heard we got some work to do?"

" We've got a murder to solve Stella. Go check with Danny, he can update you. I've got to go talk to Sid."

Danny saw Stella and smiled.

" Stella Bonasera, I could use your assistance."

" That's what I'm here for Danny. What have you got?"

Danny showed Stella a file.

" Ethan Crowley, he was found dead in his car on a deserted street. I'm going to talk to a possible suspect, Alexander Crenshaw, his prints were found in the car."

" Let's go see what we can find out."

Stella and Danny left the building. As they were doing that, Mac made his way to the M.E.'s office where Dr. Sid Hammerback was still working on Ethan Crowley's autopsy.

" Sid?"

Sid looked up at Mac.

" Hey Mac."

" What have you got?"

" Cause of death is from strangulation," Sid said," His throat was slashed, but that's not what killed him. You can tell by the marks on neck. His larynx was crushed."

Mac took a look and saw marks that looked like Ethan was strangled with a thin rope or fabric of some kind. Then a thought came to him, the seatbelt.

" You notice anything else Sid?"

" Stomach contents were light. No alcohol was in his system and no signs of physical ailment. This young man was in perfect health. Did you get a hold of anyone in his family?"

Mac nodded his head.

" His father is on the way. Thanks Sid."

Mac then saw an officer with and older man who almost looked like the spitting image of the young man who now lay on a slab in the morgue.

" That must be the father," Sid said removing his glasses.

" This is the hard part, but it needs to be done," Mac said.