Well, I finally got around to watching this one, and I must say I was underwhelmed.
I enjoyed the Paula Hawkins novel–even though there were times when I wanted to box the main character’s ears. (I have little tolerance for drunks.)
The movie, however, dwelled too much on the alcoholic self-absorption of ‘Rachel’. The directors should have emphasized the action more.
My advice: read the novel, skip the film version.