Police investigating the Moscow college student homicides did not obtain search warrants in their handling of DNA from the crime scene — the critical, and perhaps only, piece of evidence that ties suspect Bryan Kohberger to the victims — and efforts to block it from his trial hinge on the novel argument they were legally required.

At a court hearing on Thursday, Kohberger's lawyer, Anne Taylor, argued that the witness' testimony could not be trusted because she has "memory problems" and was uncertain about whether or not she had been "dreaming" that she saw Kohberger at the residence just after he allegedly killed her four roommates.