It is perhaps inevitable that any discussion of 'thick skulls' wil lead to a discussion of 'law enforcement personnel'.

However, I consider it highly unlikely that the BPD is knowingly sheltering a suspect; it is far more likely that they are simply the inept and incompetent dolts that they appear to be.

Lack of forensic clues at the crime scene does not necessarily imply any sort of knowledge of forensics on the part of the perpetrator or that the perpetrator exercised even the slightest precautions against leaving evidence.