Couple of theories on that.

[The hunter was calming down himself now, too. A good look at the other showed those signs of nervousness, which he could understand.

Whether his "theories" were joking or if he might be half serious in advancing them... he'd leave to the American.]

Could be a bad reaction to an opium den of questionable quality.
Could be a bizarre circle of Hell.

They claim we've been dragged to some little town by experimenting scientists.

Still think my theories are better.