I think the thing that I found the most perplexing was Mr. Wasey’s motivation. Like I got why Mr. Burns/Farraday wanted him. And I got why Ms. Tatlock, as a missionary, was willing to put up with his nonsense. I even got why he needed their help to get back to LA. What I couldn’t understand was how at some point this nipple obsessed, neon tie salesman became the point man in the investigation. Once his character cleans up, everyone just sort of steps aside and let’s this crazy vagrant lead the investigation. He’s not a detective! He’s just some dude that just happens to look like some other guy. That’s it. Yet the movie tries to portray him as some kind of street savvy gumshoe. He’s not. We’re not even talking about a Mr Allnut situation from The African Queen where he’s some guy who has been around long enough that he’s become an expert at navigating the local climate. He sells nudie ties. That’s what he does. Nothing about him makes him particularly well-suited to negotiate with corrupt cops, drug dealers, or mobsters.
What would have made more sense is if it were explained that he was some kind of disgraced, but talented, detective that had fled to Shanghai to escape his troubles. Everything could pretty much stay the same, except his character’s motivation for sticking around and wanting to figure out what’s going on would make way more sense. The movie would then become a journey of redemption and self-discovery rather than just about some skeevy, pornographic cravat salesmen who somehow knows how to rig the trigger of a Shanghai Surprise.