Sara Aldrete Matamoros is a convicted Mexican serial killer who along with Adolfo Constanzo headed a drug trafficking and human sacrifice cult, dubbed "The Narcosatanists."
 
Me Dicen La Narco Satanica paperback book, 200 pages which was published by Grijalbo in 2011.
 
Aldrete has hand dated and written a note on title page and signed her name at the close, "May 2020 Now this book is in your hands and you are under my spell boy! 
From prison, the witch, Sara Aldrete."