Baccono - Episode 8:
This episode further confirms that Isaac and Miria are characters created to operate "outside" of the rules of the world and the show. They serve the primary purpose of lifting the mood of the plot above the dark and bleak outlook for pretty much all the other characters. Especially after the revealations in episode 7, it seems clear that Isaac and Miria are meant to represent the unique viewpoint of humans who simply want to live their lives the way they want to without giving a damn about what society expects out of good and evil, or profit and loss. They simply want to have a good time and they want everyone else they meet to have a good time too. It remains to be seen if such a carefree and irresponsible outlook on life will be rewarded or punished in the narrative...
Baccono - Episode 9:
I'm pretty convinced that pretty much every major character on board the Flying Pussyfoot is insane. The show does a pretty good job and showcasing different moods and emotions, changing the range and atmosphere very quickly from episode to episode. Here, the level of insanity is raised bit by bit.
First by the revelations about Claire are meant to gross the viewer out, and to show how disturbed an otherwise normal character (previously depicted) can actually be. Then the reactions to the murders by Ladd shows that he is just as disturbed, if not more so, because of his inability to control his joy over seeing the result of such carnage. Does that make him even more of a monster? Possibly.
But the episode isn't content to end there, it climaxes with a more shocking, although somewhat telegraphed, scene showing that even an otherwise unsuspecting character on board the train is just as twisted and open to enabling death and destruction of innocents on the train.
If there's one thing the show is trying hard to drive home, it has to be that most of the people on board the Flying Pussyfoot were doomed from the start. It isn't just bad luck, or a single factor which would lead to their doom, but that the combination of passengers on this ride are such that the train has to be indeed cursed. :lol