I think it is. There is even a picture of it. BTW, it's Cahill Island, not cahill island.
Harpers Island is a real place, but it is nowhere near Seattle. It is in the southeastern part of Ireland.
Yes. It is a island in the Irish Sea, lying between Ireland and England.
Daniel Arthur Cahill.
Dan Cahill that is his real name.
i think his real life name is Patrick.
Dan Cahill's full name is Daniel Arthur Cahill.
he has ties with the Vespers and he is Aruther Trent not cahill
no..its called llewoc nomis
Yes it is in Southern Ireland
Londonderry is a city on the boarder between Northern Ireland and the Republic of Ireland.
is mission islands a real place in maryland
Grace Cahill is a fictional character from "The 39 Clues" book series. She is not a real person in history or in the present day.