🚨Warning: Some major spoilers ahead!🚨
1. First, when Michael left Scranton to be with Holly on The Office.
2. On Friday Night Lights, when Landry killed someone, but it was never addressed again.
3. On Shameless, when Mickey had to flee the country and it basically caused him and Ian to breakup for no reason.
4. On Grey's Anatomy, when Izzie had sex with Denny's ghost after her brain tumor caused her to hallucinate him.
5. When Lexa was killed by a stray bullet on The 100.
6. When Barry Allen didn't learn his lesson and continued to mess up the timeline on The Flash.
7. After the Tenth Doctor regenerated on Doctor Who.
8. When Luke and Lorelai broke up and she immediately went and slept with Christoper on Gilmore Girls.
9. After Elliot Stabler left Law and Order: SVU.
10. When Charlie was trapped underwater during the iconic "not Penny's boat" scene on Lost.
11. When Negan killed Glenn for basically no reason on The Walking Dead.
12. When Jessica Pearson was forced to leave Pearson, Specter, and Litt on Suits.
13. When Betty did a sexy dance at a bar on Riverdale.
14. When Poussey was killed for no reason on Orange Is the New Black.
15. On Scandal, when Olivia was kidnapped and then Fitz went to war in order to get her back.
16. When Spike assaulted Buffy after she explicitly said she didn't want to sleep with him again on Buffy the Vampire Slayer.
17. When basically the entire Stark family was brutally murdered during the Red Wedding on Game of Thrones.
18. When 13 Reasons Why graphically showed how Hannah killed herself.
19. When Cristina decided to leave Grey-Sloan Memorial and Meredith on Grey's Anatomy.
20. When The Vampire Diaries decided to introduce a cure for vampirism.
21. On How I Met Your Mother, when Barney and Robin got divorced after we spent an entire season watching their wedding.
22. When Laurel was killed by Damien Darhk on Arrow.
23. On One Tree Hill, when Lucas and Peyton moved away from Tree Hill.
24. On Heroes, when they decided to focus on a carnival troupe during the final season.
25. Once they decided to completely stray from the books on Pretty Little Liars.
26. When Derek was killed on Grey's Anatomy.
27. When Dexter cheated on Rita with Lila on Dexter.
28. When Rayna died on Nashville.
29. When Carl tragically died after being bitten by a walker on The Walking Dead.
30. On Sons of Anarchy, when Tara was killed basically to give Jax a good storyline.
31. On Empire, when Luscious woke up from his come and lost his memory.
32. When Hayley was killed during the final season of The Originals.
33. On How to Get Away With Murder, when Wes was revealed as the body.
34. When Eric decided to leave Point Place on That '70s Show.
35. When Matthew and Sybil died in the same season of Downton Abbey.
36. When Sookie escaped the fairy world on True Blood.
37. And finally, when Scrubs didn't end with Season 8 and came back with one more season.
Note: Submissions have been edited for length and/or clarity.