Brett Partridge was a forensic pathologist with the CBI. He seems to enjoy hs work a little too much, causing Patrick Jane to call his a ghoul. He appears to be fascinated with Red John and it is perhaps because of this reason that he is one of Jane's seven suspects to be Red John. Many fans considered him to be the one most likely to be Red John, however Partridge's murder at the hands of Red John forever ended that speculation. He may have been a member of the Blake Association, but it is not certain as the area where the three dot tattoo would have been was sliced off.