CSI: Crime Scene Investigation, Season 1

Dr. Hillridge:
Mr. Grissom. You're looking grim. I'm afraid I don't have a supplement for that.

Grissom:
We found blood in your kitchen blender. The lab has matched it to the dead jogger.

Dr. Hillridge:
It had to happen eventually.

Grissom:
Why?

Dr. Hillridge:
You're the scientist. I should have thought you'd figured that out.

Grissom:
I haven't.

Dr. Hillridge:
Think of the bugs, Grissom. Cycle of life. Angels versus insects. When we die the fable we tell ourselves is we go toward a white light and angels. But you and I both know the hard reality is that insects arrive immediately and begin turning us back to earth.

Grissom:
Yes. But the insects haven't killed anyone.

Dr. Hillridge:
No. But they'd die if they didn't have bodies to feed off of. And so will I. ... Porphyria.

Grissom:
The madness of King George.

Dr. Hillridge:
Or the Legend of the Vampire. Which makes it a real hard disease to have. But it's real for me.

Grissom:
It's genetic.

Dr. Hillridge:
The only thing my father ever gave me. The first time it presented was after a minor sunburn. My lips receded -- so did my gums. I increased my glucose intake and I was fine ... for a while. I began a drug regimen but they only treated the symptoms. I had my spleen removed because it absorbed my blood. But nothing helped. Lesions started forming on my face. That's when I bought my first dog. Bullets and poison leave residue in the blood. Dogs kill clean. Imagine what I'd look like by now without them.

Grissom:
You could've tried intravenous hematin.

Dr. Hillridge:
Human blood is the richest source of heme.

Grissom:
And so you extracted the organs with the most blood-- the liver, the spleen, the heart.

Dr. Hillridge':
If you lock me up, I'll go mad.

Grissom:
Unfortunately, a symptom of your condition. But you've been killing people, doctor.

Dr. Hillridge:
I'll die in prison.

Grissom:
Yes, but the people you'd be feeding off of will still be alive. Cycle of life.