There are no perfect crimes, but there are a lot of imperfect prosecutors.
One has to look no further than Mueller's doddering performance today, much to the Democrats' (and CNN's) dismay.
yes he seems very old and exhausted.
Because there are no perfect detectives
Because a perfect crime would mean leaving no trace behind.
Just because a criminal leaves DNA or fingerprints behind, doesn't mean the crime can be solved. Especially if the DNA/fingerprints are not in a database, somewhere.
According to something I read years ago ... the FBI claimed that the majority of criminals are caught because there were witnesses, or the criminal told someone.
I watch crime shows all the time, seems if you must do a crime wear odd sized shoes you will throw away right after and wear gloves. I can't even think of doing a crime, my hair is on everything I touch or get near.
A crime may go unsolved for many years, hopefully eventually most get solved.
If it was a perfect crime you wouldn’t even know they were dead/missing