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Tyler Hadley was a typical teenager in most ways but in the weeks leading up to his house party from hell, he had made it abundantly clear what he intended to do to his parents, Mary Jo and Blake Hadley, to make the party a reality. This kid told everyone who would listen, yet, no one took him seriously. That is, until he showed his best friend his handy work right in the middle of the rager. This kid is a monster, guys.

Sources:
https://www.tcpalm.com/story/news/crime/st-lucie-county/2018/12/20/tyler-hadley-resentencing/2227191002/

https://www.rollingstone.com/culture/culture-news/tyler-hadleys-killer-party-54270/

https://abcnews.go.com/US/best-friend-ruined-life-killed-parents/story?id=23189582

https://www.wptv.com/news/region-st-lucie-county/port-st-lucie/tyler-hadley-i-laughed-after-killing-parents