Ed. Note: Chris Halkides has been kind enough to try to make us lawyers smarter by dumbing down science enough that we have a small chance of understanding how it’s being used to wrongfully convict and, in some cases, execute defendants. Chris graduated from the University of Wisconsin-Madison with a Ph.D. in biochemistry, and teaches biochemistry, organic chemistry, and forensic chemistry at the University of North Carolina, Wilmington.
Oregon attorney Brandon Mayfield was arrested because of his alleged involvement in the Madrid Train Bombing on 11 March 2004. The most probative evidence against him was a fingermark on a bag. The FBI had identified Mr. Mayfield as the source of the fingermark, and even a defense expert concurred. The Spanish authorities did not, and within a few weeks Mr. Mayfield was released and given an apology. The Brandon Mayfield case was among the most highly publicized failures of fingermark/fingerprint evidence. Continue reading
