It was definitely time for me to write this review. I'm so behind them, and that never happened to me. But all this talk isn't about book. 
 So, now is the moment to start the real review. 
 I liked this book. I can't say a lot, even if I rated it with five stars. My relationship with mistery and thriller books is kinda strange. I don't take in great consideration the characters, but just in a little way. So I usually tend to value more the plot over them. But the most importante parts in my opnion are: the way the book sucks me into itself and the feels. But not feels like love, cuteness overload and precius moment. In a more easy way, I can say that the major part is played by interest. 
 The Girl on the Train kept my interes alive. For real. 
 We have Rachel. She isn't the typical character role model. She nealry always drunk, she had lost her job and she just take the train to London more for spending her time doing something. And for keep the truth far, far away from her last friends. 
 Every day she watches a couple that lives in a house. A house really near to another one. And that another one is the one where she used to live along to Tom, her ex-husband. But now Tom has took her house with Anna and theirs baby girl. 
 Jess and Jason, the couple she watchs everyday, is a family-dream like to her. But the truth is definitely another one. And everything changes when Megan, Jess' real name, disappears. 
 The book is narrated by three points of view: we have Rachel, Megan and Anna. And if you're looking for a heroine, you will not find one in this book. 
 The first one drink. And drink. And drink. 
 The second one is not capable to be happy. 
 The thrid one is obsessed with her family, her husband and her daughter. 
 Starting from this premise, I cant say that this book was a surprise. Reading other reviews I was excepting to read some kind of horribile novel. 
 Everything is a slow reconstruction of missing gestures, forgotten words, personal failures... 
 Also Rachael isn't a character that can be easy understanded. Why she acts like this? Why she needs so bad to know what happened to Megan? 
 Maybe she isn't able to mind her own business, maybe she is searching for some kind of morbid affection that could relate her to someone. She's ready tu use other's flaws and weakness, and even if she acts careless, everything she does is in the name of a good intetion. The only problemi s that she isn't able to calibrate the consequences of her own actions. 
 Another thing that is showed in the novel, along the thriller genre, is a fact which is actually a truth, a reality: people can be the worst. People are weak, shallow, cruel. There aren't positive character in this book but only a protagonist without a real hope who works only a little bit in herself, just like the majority of the world. 
 Last and little talk about the thriller part I can say that I'm quite satisfaited. I was hoping foro me kind of mysterious killer but I aslo didn't guess the culprit. And tha, sadly, happens to me a lot while reading a thriller book.