An Unkindness of Ravens (The Jabberwocky Book 2)

A grisly death in the Tower of London and a deadly attack on an ocean liner in the mid-Atlantic signal the arrival of the Raven, a creature that seeks to reshape the universe. Alice Liddell and Dorothy Gale, fresh from defeating the Red King, must try to prevent it. But even their childhood adventures in other worlds haven't prepared them for the deadly ambition of this relentless creature of darkness.