Happy December! This month, Sierra is telling Kelsey seven stories related to the seven deadly sins and the holidays. Today's story is about pride as a sin and the Dayton Christmas Killing Spree: a group of unhinged kids supporting each other in crime, and then turning on each other in the end.

Sources:

https://en.wikipedia.org/wiki/Seven_deadly_sins

http://www.deadlysins.com/

https://murderpedia.org/male.K/k1/keene-marvallous.htm

https://www.10tv.com/article/news/man-convicted-92-killing-spree-executed/530-532fd238-f8b2-4035-a011-e3aa1802d75d

https://www.whio.com/news/crime--law/the-christmas-killings-dayton-worst-crime-spree/mPanSaRgCoVCaPsNlA1jnK/