The youngest sister and narrator
Iris Hollow
The city where the sisters live
What is London
The Halfway seems to be controlled or "ruled" by this specific sister by the end of the book.
Who is Grey?
Grey’s boyfriend who gets dragged into the mess
Who is Tyler?
To enter the Halfway, you must find this structure to go through
What is a doorway?
The shape of the scar located on the sisters’ necks
What is the half moon scar?
The country where the sisters originally went missing on New Year's Eve
What is Scotland?
The halfway is described as smelling like this
What is decay? (Death or rot)
The mother of the Hollow sisters
Who is Cate?
The sisters discover they are not actually human, but rather these creatures from the Halfway
What are changelings?
The name of Grey’s fashion brand
What is House of Hollow
The venue where Vivi’s band plays
What is Jazz cafe?
The terrifying, bull-headed figure that pursues the sisters through the doors.
Who is the Minotaur? (Gabe)
The little girl Grey saved that carries a shotgun
Who is Agnes?
The "real" Hollow sisters are revealed to be in this state/location.
What is a grave? (Buried/dead)
The town the sisters disappeared from
What is Edinburgh
The name of the school the sisters attended
What is Highgate Wood School for Girls
This specific white flower is the sisters' signature scent and appears wherever they go.
What are carrion flowers?
The classmate that bullied Iris and shaved her own head in front of the school
Who is Justine?
The person that Tyler and Iris met unexpectedly in the halfway
Who is Rosie Yang?
The name of Vivi’s band
Who is Sisters of the Sacred?
The specific location/building where the final showdown takes place.
What is Three Mills Island/Bromley by Bow?
Time moves differently in the Halfway; one month there equals this much time in the real world
What is one month?
The name of the roommate Grey brought back from the halfway after she followed her there
Who is Yulia?
The final scene implies Iris has taken over this role from her sister.
Who is the Queen/ruler of the halfway?