The Girl on the Train by Paula Hawkins (2015)

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Getting lots of buzz as this year's Gone Girl, I have to say, it's a pretty darn good thriller. 

Lonely, alcoholic Rachel rides the train every day, pretending to go to the job that she lost. She gazes out the window and into the windows of the houses she passes on her way, making up stories about the people who live there. But one day she sees something very mysterious and gets involved with a murder investigation.

Told by various characters, this was an interesting, well-written, great characterized novel. Plus, and not insignificantly, a fascinating look at alcoholism. Also, the end is so suspenseful that I kept putting it down, not wanting it to be over.