Mystery Royale by Kaitlyn Cavalancia (Author)

The only thing sixteen-year-old Mullory Prudence has left of her mom is a warning: "Run if the strange finds you." But mysterious warnings don’t pay the bills or help take care of her sick Gran. And they certainly don’t make her miserable after-school job any more bearable. When unexpected letters start appearing in peculiar places––sealed in bags of dog food and hidden in the refrigerator–