Dangerous Girls (Fear Street Collector's Editions #4)
by R.L. Stine
Destiny Weller and her twin sister, Livvy, return from their summer vacation with an overpowering thirst –– an inhuman desire to drink blood.
Have they turned into vampires?
How will they keep their horrifying secret from their family and friends?
And can they find a way to become human again ... before it's too late?