A woman serial killer? Who is also a mother? Buckle up and get strapped in folks because this case is allllll kinds of messed up. 

 With most information coming from Greg Olsen's nonfiction masterpiece, If You Tell, today we will be discussing Michelle "Shelly" Knotek: an actual monster who brutally abused and tortured her daughters for years and eventually became a murderer as well. 

https://www.goodreads.com/book/show/45299992-if-you-tell