Courtney DiLaurentis (Book Character)

Courtney Dilaurentis is the real best friend of Spencer, Hanna, Aria and Emily. The girl later find out that Courtney be-frriended them as Ali and that she is the one who's dead.And the real Alison, later in the books, Comes to them and says "YOU RUINED MY LIFE!!!" But the true person to be Courtney. Alison trys to burn the ouse down withe the girls still inside but they escape and Alison doesn't, Burning to Death.