Sent to me as a "send a favourite book to a stranger" book from the Facebook project!!

This is a fabulous story!!! The girl on the train in Rachel who commutes from Ashbury to Euston station every day which happens to go past her previous house where her ex husband still lives with his mistress now wife Anna and baby daughter. A few doors down lives Scott and Megan, presumably happily married. Except that Megan disappears suddenly, discovered dead several weeks later, Rachel is an unemployed alcoholic who regularly has blackouts and can't remember things, and Tom has been lying about everything. So who killed Megan????

Handed to a colleague who's seen the movie but not read the book!

Found in a charity shop in Truro to read on my daily train commute. Will be returned when I have finished with it.