The Coldest Moon

Little Red Riding Anna, you don't see, huh? Elsa is struggling, and her whereabouts are puzzling. Now, murders are abound, it's better if you're safe and sound. Please don't fright, your sister won't bite (much). Every month may be a hint . . . now what's this 'imprint? *AU, Elsanna, Icest, Werewolf!Elsa*