The 10/16/13 CSI: Crime Scene Investigation episode titled "Last Supper" spoke of the use of mikrosil to capture knife tool marks in bone. This is a truthful and accurate, albeit rare, occurrence in an investigation. Mikrosil is a casting material that is usually used for 'classic' tool marks but certainly a knife blade cutting into bone is considered a tool mark. The identification of a knife when the blade strikes the bone hard enough and that tool mark is discovered in autopsy can certainly be valuable information.
Another useful bit of information obtained was the fingerprint in blood. Blood is useful and fingerprints are useful but you put someone's finger in someone else's blood and now you have a timeline. The victim had to be bleeding and the suspect had to have been at the scene after the bleeding began.
I do have a question as to a fingerprint maintaining its' integrity in a 'sugar' straw. Sugar would be extremely soluble and even though the 'sugar' straw may hold up for awhile with the liquid coursing through it, I have my doubts as to how valuable the minutae in the print would be. If you could get an individualization from that - wouldn't it be sweet?
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