CSI: NY2004

Dr. Evan Zao:
The killer must have put the head back on. Dried blood around the wound might explain how he kept his head on straight.

Detective Mac Taylor:
What can you tell me about the murder weapon?

Dr. Evan Zao:
Basically transected everything. There's a slight angle to the cut, moving from right on the lower side to higher on the left.

Detective Mac Taylor:
This is clean.

Dr. Evan Zao:
Clean doesn't begin to describe it. I mean, there's no hack marks, no stutter marks, no evidence of an electric blade. There's no trace in the wound track.

Detective Mac Taylor:
Very few weapons could make a cut like this.

Dr. Evan Zao:
Yeah. Did you find any guillotines at the crime scene?