bottom, nothing. analysts now turned to the pink bathrobe found in the garbage the morning of the murders. family members said the robe belonged to sarah. as rod engler examined it with a pro scope, a high-powered microscope capable of 400 times magnification, he was shocked to discover no blood spatter on the front of the robe, but then he looked on the back. he found hundreds of tiny specs of blood, high-velocity blood spatter, the type that would be created by a high-powered rifle. dna testing showed the blood came from both diane and alan johnson. this proved the killer wore the
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they found paint on both the t-shirt and the bathrobe with the same chemical makeup. what i believe happened now, there is an evidence transfer from the blue t-shirt deposited on to the pink bathrobe. this proved that sarah had worn the robe over the top of her t-shirt. finally, investigators analyzed the gloves found in the garbage. when you handle an item and you leave behind the oils and residues from your skin, that contains skin cells, and we are oftentimes able to get dna from those samples. scientists swabbed the inside of the gloves and found dna from only one person. sarah was the source of the dna found on the latex glove. all the clothing found in the garbage can was then checked for gunshot residue, a gas created by gunfire that can adhere to the shooter. we sent the robe, we sent the leather glove and we sent the latex glove to a lab in chicago, akrone and associates. they eventually found gun residue on all three items. but investigators had one final ques