Thanks to students at the International School of Amsterdam for creating these fabulous door book-covers (right):
Also to C Hanson, Higham Lane School, Nuneaton for this fabulous underworld news story
Thanks also to Daniel Sims (Bay House School and Sixth Form, Gosport, Hampshire), Hannah Brayford (Hugo Meynell Primary School, Loggerheads, Shropshire) and Louise Greenhill (The Polesworth School, Dordon, Staffordshire).
Hi Harriet
I think exit 35845654 should be in London just outside the west stand of Twickenham Stadium.
Hope you like this exit number
Thanks
Becky Taylor
H Harriet i think exit 22964 should be in the very corner of our school hall (Broke Hall)
Bye
Hi Harriet
i think a exit should be called exit 103
and the location could be in Lydon green Jr school so a nuclear bomb could shoot up towards the school and its from the underworld, but the school doesn’t blow up instead it bursts out junk for the underworld.
yours faithfully
afraxXXx
Hi Harriot,
I think exit 786 should be positioned in the cellar of Yardley Baptist Church behind the hidden door. No one has ever been there accept for me . I thought it was just a box or something so leaned against it and then I was inside a toilet. I told the manager but all he said was its no use at all no one will ever go there.
Zubair
YOU COUDLD HAVE THE BOY WHO FELL DOWN THE BLACKPOOL WELL EXIT 99
Hi harriet,
I think theres a exit at the top of my grandmars garden its exit 000000000000000000000000000000000000000000000000000000000000000.1
Thanks 
Hi Harriet I love your books.I think exit 1189 should be behind the mound in the grounds of Gravenhunger Manor.Please reply
Dear Harriet im writing a book myself based on twin sister one evil and one good any tips for me
Hi harriet I was at the school visit on Thursday and id love to tall you about my egsit number mine is 89675 and the place is in spane at the royal costa hotal in the cleening cuberd plz use it in one of your book’s from sophie fox age 11
hi harriot me again just had a grate i dia for a book . you could do it about a girl cald milly who moves house to wayels and one day gose in to this abandend pub to find thosends of ghosts there . sophie fox xxx
I'd love to hear from you! - Please leave me a comment
Hi Harriet,
I think the exit should be the number 543210 and be situated in a head teachers office right underneath the her chair so an unsuspecting head teacher falls down. Preferably in BHS, GDST;your old school.
THANKS