An environmental lawyer is poisoned with a radioactive isotope and has only one week left to help the CSI team find her murderer.



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Episode cast overview, first billed only:
Belle King
De Soto, Radiation Man #1
Parker Boyd
George Risher
Sam Carver
Belle's Office Worker (as Maria Teresa Rangel)
Janet Carver
Greg Crooks ...
Carl Aspen
Radiation Man #2


Junkie and small thief Carl Aspen's corps is found on the street, beside a syringe but not killed by an OD. During the autopsy, Horatio has to strike the alarm on account of an extremely fast-spreading hand-wound which he realizes must stem from nuclear radiation. Luckily even Delko, who spend most time exposed while examining the cash loot, is all right. The unsuspecting robbery victim however is terminally contaminated. It's environmental lawsuits specialist Belle King. Her numerous enemies include George Risher's isotopes firm, but things are more complicated then they seem. Written by KGF Vissers

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Release Date:

10 February 2003 (USA)  »

Filming Locations:


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Technical Specs


Sound Mix:

| (Dolby 5.1)


Aspect Ratio:

1.33 : 1
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Did You Know?


The plot to this episode is not dissimilar to the Dennis Quaid-Meg Ryan movie D.O.A. (1988). See more »


Horatio states that the Iodine 131 decays to normal Iodine (isotope 127). I-131 decays via beta radiation to Xenon 131 (a neutron converts to a proton and releases an electron). Xenon 131 is stable and a noble gas (doesn't react). It would not be detectable with sulfur. See more »


Lieutenant Horatio Caine: Hey.
Belle King: No silver jumpsuit, hmm? I guess that means I'm... I'm all better.
Lieutenant Horatio Caine: Well, um... you've actually ingested some isotopes. An isotope called Iodine-131.
Belle King: The stuff they use for cancer therapy?
Lieutenant Horatio Caine: Mm-hmm.
Belle King: But I haven't ingested anything. And even if I did ingest a little bit of Iodine-131, it wouldn't kill you.
Lieutenant Horatio Caine: Actually, you've ingested quite a bit of it.
Belle King: Well, how much?
Lieutenant Horatio Caine: It's my understanding that at these concentration levels...
Belle King: How much?
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