A member of the 13th Floor Witches. Mrs. Someone was with Briar Rose and Hakim in the Adversary's capital city, Calabri Anagni. She instructed Briar to prick her finger on a needle to put the entire city to sleep, them included.

Boy Blue once asked her name, but she replied that she keeps her true name "tucked away where no fell power can discern it".

It's possible she was killed when goblins raided the sleeping capital, burning it to the ground.