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Transcripts for CNN CNN Newsroom 20131103 21:48:00

pathology is science, but there s an art to it. different exz perts will have different opinions. in many criminal trials, you ll hear a sde fence expert, you ll hear a state s expert. but those witnesses won t always agree. this is the feds coming in to have this third look at it to make a determination of which one was right. we ta re talking about 11 ms now. do you worry that the evidence has been so compromised that there s no way to really conduct a thorough investigation this far out? it s problematic. we ve seen this before with many other cases. where crime scenes have been contaminated and it s very difficult to kbet that evidence back. so that s a problem now. but i have do believe there s enough po tenl shl evidence that they may be able to find something to help the family. danielle is right. the colder a case gets, the more difficult it becomes to investigate. ....

Defence Expert , Exz Perts , Crime Scenes , Po Tenl Shl ,