On this episode of MWMH, Payton and Garrett discuss the case of Colleen Ritzer.
https://en.wikipedia.org/wiki/Danvers,_Massachusetts
That Chapter - The Disturbing Case of Colleen Ritzer
https://www.nytimes.com/2013/11/23/us/teachers-body-was-found-with-slit-throat-and-note-documents-say.html