Annie covers this episode that is top on the list of Iowa's most famous cases! (And we had never heard of it!)
You can purchase author Scott Cawelti's fascinating book covering this story from Amazon...
Amazon.com: Brother's Blood: A Heartland Cain and Abel eBook: Cawelti, Scott: Kindle Store
https://www.google.com/amp/s/www.monstersandcritics.com/tv/halloween-night-cain-and-abel-murder-of-mark-family-in-cedar-falls-spotlighted/amp/
