Book Club : The Girl on the Train by Paula Hawkins

Commuter Rachel Watson catches daily glimpses of a seemingly perfect couple, Scott and Megan, from the window of her train. One day, Watson witnesses something shocking unfold in the backyard of the strangers' home. Rachel tells the authorities what she thinks she saw after learning that Megan is now missing and feared dead. Unable to trust her own memory, the troubled woman begins her own investigation, while police suspect that Rachel may have crossed a dangerous line.

The Girl on the Train is a 2015 psychological thriller novel by British author Paula Hawkins. The novel debuted in the number one spot on The New York Times Fiction Best Sellers of 2015 list dated 1 February 2015, and remained in the top position for 13 consecutive weeks, until April 2015.
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