Dear Detective Mark Hallman: I am a board certified investigator from Columbus, Ohio attempting to locate missing Ohio State University Medical Student Brian Shaffer. Please review the attached documents concerning missing Ohio State University Medical Student Brian Shaffer. Brian Shaffer was last seen on the OSU campus on April 1, 2006 (see attached case summary and missing flyer's) with his close friend William "Clint" Florence who is now a Research Fellow in the Vanderbilt University Department of Microbiology & Immunology as a Post Doctoral trainee. William "Clint" Florence has refused to take a polygraph for the Columbus, Ohio Police or the Ohio State University Police, has hired a criminal defense attorney, moved to Vanderbilt and has been less then cooperative with the police and this investigator. Florence behavior has been described as indifferent and unusual since the disappearance of Brian Shaffer. Florence may be considered a person of interest in this matter but there is currently a lack of evidence to identify him as a suspect. This case has received national media attention and Brian Shaffer's father Randy Shaffer was recently killed in a tragic accident where a tree fell on him in his back yard. Clint Florence photograph and personal data can be found on page 2 & 3 of the case file (document attached). I would appreciate you posting the attached flyer's around campus and at Microbiology Center, forwarding the attached data to your campus newspaper, and providing any information available. I can be reached at 614-565-7189 or contact Detective Sergeant John Hurst at the Columbus, Ohio Police Department 614-645-4670. Please contact me with any question.