I have a theory..

for the season 2 final, as u know we have many midseason finals etc. and with each one one of the girls was endanger of killed,
Season 1x10 - Hanna hit door car
Season 1x22 - Spencer nearly pushed to her death
Season 2x12 - Emily nearly killed door the fumes
Season 2 final i think Aria could be endanger
Well thats what i think anyway, it would be cool if i was right, i never can predict the season finals