When high school student Megan Nichols vanishes from her Illinois home, her mother finds a note saying that she ran away; a grisly discovery made three years later changes the course of the investigation.

The investigation into the poisoning death of Wisconsin mother-of-two Julie Jensen takes a surprising turn when detectives learn that Julie wrote a letter just days before her death pointing to a possible suspect. 

INTERVIEWS WITH: Pleasant Prairie Police Department Captain Barry Ollila, former Kenosha County District Attorney Bob Jambois, Private Investigator Dave Ellis, coworkers of Julie's husband Mark Jensen, and others.