Castille snorted.
"I may be blind boy, but I am hardly deaf...though...that last little trick you performed did peak my interest." He said as he stood up, his loose garments, hiding his lanky legs as he took his walking stick and nodded with his head.
"Follow me, I doubt you'll be going on a watch patrol with those two tonight, as they would be watching their backs more in suspicion than actually pay attention to the streets." He said as he lead him back to the fence.
"I'll try to ease and soothe your mind." Castille spoke as he held the hidden door open for him.
"Undoubtedly you've been taught many things little Crow, but as you should be well aware the stories seldom get told fully in order to avoid loss of face or out of shame and disgrace. Such is the way of those who write history...of rulers who determine what will be permitted to exist and the fanatics don't burn for their own peace of mind." He lead him back into the city, hobbling through alleyways that started to liven up as lanterns were lit and small stalls and shops were set up.
"The last few hours before the curfew, that is when you see the true face of the City. Twilight hours we call them. It is when even mages dare to come out and play. When you see artists perform their craft and dancers move silkily for a few silvers." He lead him up the hill, allowing one to look into small courtyard where drinking establishments and foodstalls slowly attracted the working folk.
When he nearly reached the top of the stairs he moved behind a couple of houses to a clear overview, one of the few higher points of the city, offering a clear view of what lay below.
"This City is quite powerful, the Merciful Mother knew this and so does the current High Priest. However it has allowed itself to be corrupted by lesser men, offering the weaker lambs an escape from the harshness that is reality." He pointed to a set of dark narrow alleys. The users are there. The intoxicated and dreamers. They squander their coin for a sliver of pleasure and hope for a dream that ends too quickly and never could be." He spoke sadly before raising his cane to the Tower with strange precision.
"You can be certain the High Priest enjoys his cut as he allows them to do business in the city. Never touch it. The haze alone is said to be so powerful for first timers that they become instantly addicted and as far as I know none have ever recovered from it."
He turned to Corvo.
"You could be a saviour of more than just your own Kingdom. Provided you're willing to see the bigger picture. Find a way to harness this city and Vaim would have a serious fight on their hands. Oh certainly we don't have as many noble strong knights or as many mages, but what we lack in that we can more than make up in sheer fanaticism. I know you'd rather be back with your own kinsmen, but you're not capable to take on an empire on your own. No matter how brave your people are, alone they were crushed and stomped by the large Imperial boot."

****more to follow