Theresa Corley was murdered December 5th, 1978 in Bellingham, MA. She was last seen leaving the Presidential Arms Apartment Buildings and was hitchhiking home. She got within 0.5 miles on that cold December morning before being found deceased on December 8, 1978 off interstate 495, only a few miles where she was last seen. 

Did trouble follow her from those apartments where alleged sexual misconduct took place or did she meet up with a serial offender who made that area his killing field--where 18 other girls had gone missing or found dead between 1977-1981 within a 50 mile radius from where Theresa's body was found.

Q&A Friday allows Detective Mains to sift through all the comments made on this weeks case and answer your questions and respond to your comments.

About Ken Mains: You have seen him on the History Channel tracking the Zodiac Killer and on the Discovery Science Channel investigating history's greatest mysteries. Most recently he can be seen on the Reelz Channel talking about missing persons and analyzing serial murderers. He served a combined 20 years in law enforcement and the United States Marine Corps. You read his best-selling autobiography 'Unsolved No More.' It is said he is "one of this countries greatest detectives" and the foremost authority on unsolved cold cases. He is raw, unfiltered and only cares about the truth. 

The credentials are there: USMC Veteran, Bachelors Degree (Criminal Justice), Masters Degree Studies (Criminal Profiling), Patrol Officer, Undercover Narcotics, FBI Task Force, District Attorney's Office, Drug Task Force Supervisor and Cold Case Detective. 

He is the founder of AISOCC, where he led the worlds best investigators including the Homicide Hunter Joe Kenda, Dr. Werner Spitz, Dr. Henry Lee, Dr. Mary Ellen O'Toole and Dr. Cyril Wecht, Jim Clemente, Bob Keppel to name a few. Follow renowned Cold Case Expert Ken Mains on his mission to solve the unsolved. 

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