In TVD 3x19, at the beginning of the episode Damon was wearing a red shirt when they were leaving for the road trip. Later when he and Elena arrive at Jeremy's baseball practice, he is wearing a grey shirt?!
In TVD 4x06, Jeremy comes back from the dead using the Gilbert ring after Elena stabs his neck. How did it bring him back if he already has the hunter's mark from 4x05? Isn't he supernatural now? the ring shouldn't work on him!
Also does anyone else think Elena's dying and turning into a vampire was a bit weird?! I mean couldn't Stefan carry both her and Matt up from the truck underwater? Or at least he could open Elena's sit belt for her so she can swim up by herself!