The Villisca Murders--so very odd
The I-45 (Killing Fields) Murders
Sharon Marshall
Jack the Ripper
Shannon Patrick Ketron--a baby abducted from his mother on the side of the road just outside my hometown of Cordell, OK. This was in 1982, and I lived right there and never heard a word about this (amazing, given such a small town). Little to nothing can be found about this case, and as far as I can ascertain, it remains unsolved.
And one case I saw on Cold Case Files, probably the most interesting case to me. A college student in Wisconsin or Michigan (I can't remember) was hitchhiking home for the holidays. She never made it and was found deceased in a cemetery with her stockings down. I believe this was in the late 60s.
On her thigh, a perfectly round spot of blood was found, and years later DNA testing showed a match with an already-incarcerated serial killer. But, at the time of the girl's death he would have been four years old.
Now, logic tells me that the blood tests were messed up in the lab, but this niggling doubt remains...fascinating.