EXTRA: William 'Billy' Smolinski - From the Case File

The clues to the disappearance of William "Billy" Smolinski may lie across Connecticut - witnesses who saw strange things happen at the time of his disappearance.

A young girl said she saw men in the woods carrying what she believed to be a body, a woman saw a white truck matching Billy's in the woods behind her house and a group of 20-year-olds hanging out in a parking lot late at night saw a man walk into a deserted driving range carrying large bags. Could they have anything to do with Billy's disappearance?

Investigative reporter Kristin Thorne puts the clues together from the case file.