1. When Walt killed Mike in Breaking Bad.
2. The whole storyline in Brooklyn Nine-Nine where Jake dated a mortician who liked to role-play having sex with dead bodies.
3. When Freddie was beaten to death in Skins.
4. And while we're on the subject of Skins, when Alo had sex with a girl who turned out to be 13 years old.
5. When Deb started to have repressed sexual desires for her adoptive BROTHER in Dexter.
6. When Clarke used a shock collar on her adoptive daughter, Maddi, The 100.
7. When the Farm harvested organs on Riverdale.
8. In Scandal, when Fitz almost went to war because Olivia — his girlfriend — was kidnapped.
9. The storyline of Aria dating her teacher in Pretty Little Liars.
10. When Ross tried to kiss his cousin in Friends.
11. The infamous "Scott's Tots" episode on The Office.
12. When the mother was killed off just episodes after getting introduced on How I Met Your Mother.
13. When Mindy ended up with Danny in The Mindy Project, despite all the dodgy things he'd done in the past.
14. And when Turk spiked Carla with birth control in Scrubs.
15. When Tyler was attacked in 13 Reasons Why.
16. When George's fiancé, Susan, was suddenly and unexpectedly killed off in Seinfeld.
17. When Sue — a teacher — trapped Blaine and Kurt in an elevator in Glee.
18. When Patty revealed she actually enjoyed killing in Insatiable.
Some submissions have been edited for length and/or clarity.