The last stranger we've narrowed in on is John Regan.

This middle aged man from a prominent family in Waterbury, Connecticut shocked his community, when in 2004 he was arrested on an unlawful restraint charge for attempting to sexually assault his 21-year-old co-worker. Then, DNA taken at the time of his arrest linked him to the 1993 rape of his friend's wife, Donna Palomba.

While out on bail for his crimes in Connecticut, on Halloween 2005 John Regan drove to Saratoga Springs where he attempted to abduct a young woman from her high school parking lot.
Saratoga Springs is a short drive to Suzy's hometown of Ballston Spa.