Summary September 22, 2011, Delta Township, Michigan: A well-liked couple, 62-year-old Michael "Mike" Greene and his wife, 46-year-old Terri Greene, are found dead in their home by Eugene and Ruby Post. Murders are rare in the tranquil region of Delta Township, MI, so when this friendly couple is senselessly gunned down in their own home, area residents are terrified. Law enforcement detectives are on the case and discover that the monster who committed the crimes had accidentally left a "trail of breadcrumbs" -- in the form of digital electronic evidence -- leading right to his door. Arrested and convicted in April 2013 of the two murders is career criminal Christopher Allen Perrien. He was sentenced to life in prison with no possibility of parole. Family members of Terri Greene, including her mother Ruby Post, appear on this show and share their grief and heartache over losing Terri.

• Crime
• Documentary