Could you share your thoughts on the countermeasures? TIA
Did they really not find any blood evidence in his vehicle? Or his DNA in the home, other than on the knife sheath? TIA
He's an advanced criminology scholar so he would have known the basics of transfer and then some.
Examples of countermeasures he
may have used::
An outer layer of clothing
Showering
Body hair shaving
Wiping down every surface (well except the snap crevice)
Lining vehicle interior
Lining trunk
Obscuring or altering license plate
Face mask
Head covering
Double head covering
Hairnet/nylon
Full balaclava
Gloves
Double gloves
Disposable shoes, generic shoes, plus or minus in size
Disposing of crime scene apparel remotely
Car wash, detailing, bleach or hydrogen peroxide, vacuuming, multiple times, meticulous cleaning, both before and after crime
Cellphone manipulation
Sparse apartment, obsessively clean
Careful disposal of personal trash
IMO these are basic countermeasures. He may have taken additional advanced ones that, not being a PhD student with his background, I haven't even thought of.
All of the above is JMO