> I'll consider the possibility that this is one of those "trade" mysteries, in which two villains do something like trade murder victims or otherwise help each other so they both benefit and deflect suspicion. But I'm more attracted to the idea that these plots are joined by some detail I've yet to ferret out.
But now I've just gotten a great hint that the trade hypothesis is the correct track. I just watched a YouTube analysis of "Strangers on a Train", a Hitchcock movie I haven't seen. The analysis said the movie alluded a lot to a motif of doubles, which right away connects it to "Lost". But "Lost" appears to also have referenced 3 specific bits of that movie:
1. Hitchcock having trouble getting on the train with a bass violin, like Charlie with his bass guitar;
2. someone's being questioned, responding, and then the questioner choking her to death, as we saw a few times on "Lost"; and
3. the whole "go back" motif as on "Lost", just with trains.
As if "Lost" weren't loaded enough with Hitchcockian allusions to "Psycho" and "North By Northwest", plus Alvar Hanso's name sounding similar to Alfred Hitchcock, now "Strangers on a Train". That last is about a trade of murder victims. Would "Lost" have given such a strong hint if "Lost" did not concern a trade of crimes?
I don't suppose "Lost" to have been about strangers on a plane; I think the deal was struck long before that, and on "Lost" it actually stuck.
Bobbo in Andover