Waning Moon (Crescent Moon Book 2)
Scarlett Martin's back. This won't be good.
After an entire summer without so much as a whisper of supernatural presence in Beacon Hills, somehow, Scarlett didn't see the tipping of the scales between good and bad coming like she usually did. As things start to tense up again, with Scott and the pack meeting unusual supernatural creatures that aren't technically allowed to be alive, things in Scarlett's personal life seem to slowly degrade too. Her relationship with Liam has lost it's spark, Scarlett's lying to the people she considers family and when Lydia gets hurt, Scarlett can't help remember what happened last time she'd left her sister bleeding out on a Lacrosse field.
The Pack is coming apart at the fringes with the arrival of Scott's old friend Theo and the mysteriously well timed appearance of the Dread Doctors. Yet again, Scarlett's doubting that they're all going to come out the other side in one piece. The only question is, who's going to be leaving them this time...
Scarlett thinks it might be her.
(Teen Wolf Season Five)