Monthly Mix-Up Mania 2013. I searched my library catalog and found this one. I really liked this story. Don't be put off because it's teen fiction. Kali is in a new school. For three weeks she's alone. Then one day someone talks to her. She makes a friend and weird things start to happen!
For an excerpt, click here.
From the author's site:
Every other day, Kali
D'Angelo is a normal sixteen-year-old girl. She goes to public high
school. She attends pep rallies. She's human.
And then every day in between...She's something else entirely.
Though she still looks like herself, every twenty-four hours
predatory instincts take over and Kali becomes a feared demon-hunter
with the undeniable urge to hunt, trap, and kill zombies, hellhounds,
and other supernatural creatures. Kali has no idea why she is the way
she is, but she gives in to instinct anyway. Even though the government
considers it environmental terrorism.
When Kali notices a mark on the lower back of a popular girl at
school, she knows instantly that the girl is marked for death by one of
these creatures. Kali has twenty-four hours to save her and,
unfortunately, she'll have to do it as a human. With the help of a few
new friends, Kali takes a risk that her human body might not
survive...and learns the secrets of her mysterious condition in the