Alabaster Shadows #3 (Oni Press, 2015)

Mr. Randolph s ring helps the kids of Alabaster Shadows learn more about the strange book they took from the underwater city, and it turns out otherworldly creatures aren t exactly new to the neighborhood. But grouchy teacher Ms. Frump seems a little too interested in the book and its secrets, as do an army of shadow monsters lurking in the school hallway.