Investigates the mysterious death of Ellen Greenberg, a 27-year-old Philadelphia teacher who was found dead in the apartment she shared with her fiancé, just seven months before her upcoming wedding. Greenberg suffered 20 stab wounds and 11 bruises on her body in various stages of healing. The docuseries provides access to Greenberg's case file, including her fiancé's frantic 911 call, crime scene photos, autopsy analysis, and surveillance footage.