1st season was da best as it was an introductory season which was filled wid lots of xcitment n thriller!!! n den 3rd season as it was very interestin 2 see abt da vampire connections, originals n ofcourse Delena Bondin!!!
Season 1, definitely. I think this was the best and perfect season. Story wise and character wise as well. After that i think s4 is second best (up till now)