If you ask about TICKET, then WERERAT will say:
"If you want special informations, buy a ticket.
I'll tell you special informations if you buy and give it to me.
Informations are in exchange for it!"
Did you give the ticket to WERERAT? if NO, give the ticket.
Then WERERAT may give you lots of clues.
WERERAT may also give you a clue about an item to open the door -- a KEY.
> Thank you for assistance!
> I feel I am stopped. Here is where I am.
> On B4, I have been behind Machine Room, found hidden entrance into B5, another locked door. What opens?
> On B6, found Pentagram with Seal.
> Have not found Swordwitch. Spoken to all High Council except Control. Found Wererat, bought ticket. Given Brass Key to Hunter and Widowmaker.
> What should be next?