Mystery? Suspense? No. Great drama? Yes.
I got this film because it is touted as a "taut psychological drama". It is a fascinating slice of life one night on a packed train. I don't really see, however, how it is a "taut mystery" or "thriller". A very, very good film, but not a thriller or a mystery.
"...nothing is left of me, each time I see her..." - Catullus