Forensic evidence, part 2; request for a continuance
When confronted by trace evidence that points to someone else, a standard prosecution evasive maneuver is to claim that the evidence got there via innocent transfer. A good general rebuttal is, then why did law enforcement bother to collect it in the first place? Specifically with respect to this case, finding hair in multiple places is problematic for the prosecution's claim, especially since some were pubic hairs.
With respect to the DNA testing and to the fingermarks, the Midwest Innocence Project
wrote circa 2017: "Despite repeated requests from trial counsel for a continuance for DNA testing, no DNA testing was conducted on the knife at the time of trial. All other forensic evidence collected at the time of the crime excluded Mr. Williams; forensic analysis confirmed that hairs and footprints collected from the scene did not come from Mr. Williams. Trial counsel also sought analysis of bloody fingerprints, which could have provided the identity of the perpetrator, only to learn that law enforcement had lost them…Shortly before trial, law enforcement lost bloody fingerprints on which the defense had requested testing. The trial court denied multiple defense requests for discovery as well as for DNA testing.” The Washington Post also mentioned that the fingermarks were bloody, but this is behind a paywall. Taking the correctness of this information as a given, the fingermarks had to have been made during or shortly after the crime; in other words, they are time-stamped in a way that not all trace evidence is.
ACLU Missouri’s Jeffrey Mittman was quoted in a newspaper article as saying, “In the case of Mr. Williams, his public defenders were unprepared. They were already involved in another high-profile capital murder case at the time they were representing Mr. Williams. They appropriately asked for a continuance, but were denied.” Asking for a continuance in a capital murder case sounds reasonable; denying it not so much.
EDT
The Innocence Project wrote in
24SL-CC00422, "Bloody fingerprints were found along the wall. And hairs believed to belong to the perpetrator were collected from Ms. Gayle’s t-shirt, her hands, and the floor...Mr. Williams was excluded by microscopy as the source of the hairs found near Ms. Gayle’s body (which did not match Ms. Gayle or her husband, the home’s only residents, and thus were presumably the perpetrator’s)...Two pubic hairs were discovered on the carpet where Ms. Gayle’s body was found." In a previous comment I mentioned that DNA testing was also used on one or more hairs from her shirt (
link). Microscopy is a good presumptive test regarding hair identification.