Horrid: 1 (Seven Sisters of Silverleaf)

This is your curse until all is made right: Ill have my revenge at the stroke of midnight. For once the moonlight touches your skin ... I win. Deltas family has been cursed. Every night one of her sisters vanishes; and shes next. Desperate to save her family Delta makes a deal with the very witch who cursed her. With only three days left to live she has a terrible decision to make: Kill a target of the witchs choosing or lose her life ... and her soul.