Inquisitor 1610

[Ripper]

Help needed!
I have 90% of the grid filled in, but now need the prison, route and refuge.
Am I right in thinking the prison is the famous one with a 'Z' in it's name? (mind you, I can't find it in the grid) What is meant by waymarks? I thought they were arrows, but the only letter that looks like an arrow is V.
Also I need help with - 27 across: Nigerian's home in Graz, Austria? (5) ?A??A (I So want it to be Razau but can't find a town called that!) Also 22 down: Fabulous beasts, more despicable than all others (6) BA?N?T
With the extra letters I've somehow managed to get 18, which is a worry, as I think even some of these may be wrong!
I need to escape from here!!!!

[Neveracrossword]

Ripper, there are some big, helpful hints on an earlier thread.
22 Down - just an anagram, I think (you've got one letter wrong).

[ProfessorMaisie]

27 HAUSA ('haus' 'home in Graz' + A).
22 BASEST anag

[kettledrum]

22d basest

[ProfessorMaisie]

Look for professorplum's question for the prison (you're on the right track).

[ProfessorMaisie]

...for the route, the letter surrounded by the prison is your first waymark - you go left from there until you get to the column that letter indicates (the column letters are the 2 answers on the bottom row, and the row letters are the two answers on the left hand side of the grid - no letters are repeated in each of these, so they work as coordinates).

[Ripper]

I can't find professor plums question about the prison!!! (well, not under Inquisitor 1610)
Thank you ProfessorMaisie, kettledrum & Neveracrossword

[ProfessorMaisie]

...when you arrive at the indicated column, the letter you encounter is the waymark for the left hand column coordinates (go up or down until you find the next waymark, and so on...).
Here are the first four, so you know if you're on the right route -
From T in the middle of the prison go left to A (this is the letter at the '[T]umble' point on the bottom row) then go up to O (this is the letter at the 'c[A]rving point in the left hand column) then go left to I ....

[ProfessorMaisie]

Iq 1610 is professorplum's question (it's just a few down from where yours is Ripper).

[Ripper]

Thank you ProfessorMaisie!

[saladdodger]

I have 20 waymarks but cant see any names in jumbles of these 20/ Am i looking for their surnames or full names?

[ProfessorMaisie]

Full names (the Dutchman's first name is shortened).

[saladdodger]

thanks ... i thought id gone wrong as i hadnt got an H in the 20...but i am an A short so must be wrong somewhere!

[ProfessorMaisie]

There are 2 As, saladdodger - the 2nd from the top and the 6th from the end.

[ProfessorMaisie]

...counting the end as the letter inside the 'refuge' which isn't part of the anagram.

[saladdodger]

Thanks ProfessorMaisie ....that explains it 21 with an extra E!