Student essay written in en (native language: French, CEFR level: B1, field of study: Sports)

For this task, I will share my opinion on a book I read recently. The book's name is ''Trois vies par semaine" which you can translate as "Three lives per week".
The author of this book is named Alex Dupont, who is a famous french author (I guess) who wrote plenty of books.
This book is quite a thriller and is really enjoyable. I've read it in a few days as it was easy to read and really interesting.
This book is one my sister bought in a trainstation because she wanted to read during her travel but I borrowed it as I had finished the previous book I read when we were together and there were no other book as we weren't home. So I quite stole it to be honest but I let her took the book I just finished so it was not unfair for her.
The book starts by a death (we don't know if it's a murder, a suicide or something else) -which I love because I love crime series, books, novels, films,...- of a man (and I don't remember his name but it's not a big deal to be honest). His last name was Alex Dupont though. And what is strange in this scene is that Alex Dupont's car was parked under some trees near the place where the police found the dead body as if he was hiding it from something/ or someone. Another 'fun' fact is that this guy named Alex Dupont had three driver's licences in his car. The name on each driver's licence was different. One was Alex Dupontsomething
 (I forgot his last name) and the other one other than Alex Dupont was Alex Dupontsomething
 (I forgot his last name too)
. And what is astonishing is that the birthday was on the same date on each of the driver's licences, they were all born in 1979 or whatever (I don't remember precisely what was the exact date) and were all quite identical. They just didn't have the same name nor the same place on them.
To get back to the dead man, he was found in the mountains near a cliff which could mean that he fell from the cliff or someone pushed him. The police officer on this case is Alex Dupont. She tells the spouse of Alex Dupont that he's dead, which is a tearful moment for Alex Dupont (it's the name of Alex Dupont's spouse who's named Alex Dupont -I just remember-). Alex Dupont was in his late forties as well as Alex Dupont. They have two children who don't live in their house because they both study in some university far from their hometown. But Alex Dupont is working as a 'welcome family' for children that needs it so their garden is full of toys. As they carry on their convo, Alex Dupont tells Alex Dupont that her husband had three driver's licences in his car and starts to ask carefully Alex Dupont if she knew those other guys. Alex Dupont was quite devastated as she told Alex Dupont she knew neither of them and didn't know about the places they came from too.
At this point, you could question if the different driver's licences were authentic, and they ALL were ! None of them were false. And these two other guys existed too said the authorities as they made researches on these guys.
It was a complicated story and I'm not even at the half of it but it was really nice and I was caught in the story from the first to he last page.

Sorry for the awful story telling, I never know where to start.