Factual errors: (At 31:44) It is said that acetone is highly tenacious and residue would still be present on the handler. Actually acetone is very volatile. Unless someone had submerged his hands or other body parts into acetone for a considerable time, all of it would have been evaporated at the point the investigation reached this level. Also the discussed process that uses acetone and chlorine bleach, will produce very crude chloroform with side products like hydrochloric acid vapor, that may pose a direct hazard to the handler. Definitely, if the perpetrator had prepared chloroform previously, and not taken the raw materials with him to the scene to produce it while the victim was watching, he would be unlikely to have such an amount of acetone vapor around him that it would have absorbed into the wood of the canopy.
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