I would say that the cover looks relatively similar to Gone Girl, and this may very well be intentional. I mean, look at this:
Then again, it isn’t as if The Girl on the Train is in bad company in its comparison to Gone Girl. I mean, there are tons of books that have been called “the new Gone Girl”, like
- Luckiest Girl Alive
by Jessica Knoll,
- Nobody is Ever Missing
by Katherine Lacey, and
- You Should Have Known
by Jean Hanff Korelitz (this is one I recommend to people who enjoy domestic noir).