A serial killer known as the 'Happy Face Killer' has had his final unidentified victim identified. The victim is Lydia McWhorter, and her identification is connected to Keith Hunter Jesperson.

The public played a role in helping to crack the case, although specifics are not provided here. Further details about the identification and the case are available from the source.

Lydia McWhorter is now known to be the final unidentified victim of Keith Hunter Jesperson, also known as the 'Happy Face Killer'.