"Vicious" is the highly anticipated conclusion to the popular "Pretty Little Liars" series by Sara Shepard. The story follows four friends, Aria, Emily, Hanna, and Spencer, who have been confronted by a stalker named 'A' since the disappearance of their best friend Alison DiLaurentis five years ago. This stalker has exposed their darkest secrets and put them in a series of dramatic and dangerous situations. As time runs out and their lives are at stake, the Liars must make a shocking decision that will leave readers breathless. With unexpected twists and shocking revelations, this final installment delivers everything fans of the series have come to expect.