At Danvers High, a beloved math teacher and the new kid mysteriously vanish after class. And police uncover something more shocking than anyone imagined.

In this episode of Murder U, we examine the 2013 murder of 24-year-old Colleen Ritzer — a teacher who inspired her students and was loved by everyone who knew her. What began as two missing-person reports soon exposed a crime so disturbing it left an entire community searching for answers.

We trace the events from Colleen’s final class to the discovery that shattered Danvers High, the evidence that broke the case open, and the trial that forced Massachusetts to confront one of the darkest crimes ever committed on school grounds.

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