The two crime scene technicians dutifully went to Chapel’s unit, luminoled the front seat of the vehicle and found no apparent bloodstains. Then, either on instruction or somehow on their own, they lowered the passenger and driver armrests in the middle. On “luminoling” or chemically testing the tops of the armrests, the technicians found a bloodstain on the top of the passenger armrest toward the rear. This is the most unusual place in the automobile to find any stains. The armrests in all of the department’s police vehicles were always kept in the “up” position, and this was for very good reasons.

The detectives knew that the crime scene technicians had been through Chapel’s unit on several occasions, most recently that afternoon when they instructed to search for a note that had been given to Chapel by Sgt. Winderweedle on the afternoon of April 4^th, 1993. They could not find the note. This is a worst-case search, which means that the vehicle had to have been searched relatively thoroughly.

Thus, if the investigators were to place blood from the victim in Chapel’s vehicle, they had to find a spot that had not been viewed by the technicians in their previous searches. The only place that would qualify then was the top of one of the armrests.