The Vampire Diaries was loved by fans for its unpredictable and action-packed plot. However, the writers sometimes took things to the extreme with their wild plot twists. Firstly, Elena turned out to be a doppelganger of Katherine, which was a shocking revelation for viewers. But it didn't stop there, as there were also other doppelgangers like Tatia and Amara. Stefan was also revealed to be a doppelganger, with previous incarnations named Tom and Silas. Despite the far-fetched nature of this twist, the fact that Stefan and Elena fell in love throughout their different lives added a touch of romance.

Another mind-blowing twist was when it was revealed that Elena's mother, Isobel, had an affair with Damon, who was also married to Alaric. This twist was not well-received by viewers. Bonnie's storyline took a bizarre turn when her boyfriend Jeremy cheated on her with a ghost, Anna. And to top it all off, Caroline ended up pregnant with Alaric's children after his wife was murdered, adding an awkward twist to their teacher-student relationship. Overall, The Vampire Diaries undoubtedly had its fair share of insane plot twists.