The Girl On The Train by Paula Hawkins is an excellent thriller, I had myself on thw edge the entire time I was reading it, oh my god just amazing.

By the way, this is the summary:

EVERY DAY THE SAME. UNTIL TODAY.

Rachel catches the same commuter train every morning. She knows it will wait at the same signal each time, overlooking a row of back gardens.

She’s even started to feel like she knows the people who live in one of the houses. Their life – as she sees it – is perfect. If only Rachel could be that happy.

And then she sees something shocking, and in one moment everything changes.

Now Rachel has a chance to become a part of the lives she’s only watched from afar.

Now they’ll see: she’s much more than just the girl on the train…