I'm sure you've all heard amazing things about this book. To be honest, it's rather odd--and difficult to explain. Basically, it tells the story of a small group of university students majoring in Greek, so absorbed by Ancient Greek culture that they care about little else. Their teacher, whom all of they admire --and one of the most interesting characters of the book--, is the one to blame for that: he wants to follow the Socratic method and forces his students to do all their subjects with him. 
 As you can imagine, students who agree to that arrangement cannot be very ordinary. There's Henry, the quiet, aloof leader (the most intelligent of them all); Bunny, the most extroverted (he's the only one with a girlfriend and friends outside of the group) and irreverent; Francis, depressive, hypochondriac and the most dependant (and dependable?) (he's my favourite), and the Macaulay twins, the most charming and manipulative of the lot. And of course, Richard, the narrator, a new student that feels incredibly proud of himself for getting to be part of such a select club. 
 The book starts with rather a shocking confession, and then proceeds to describe everything that led to that fatal moment. The foreshadowing does not allow you to be very optimistic with the text, you are always in constant vigilance (like mad-eye moody), and in my case, never fully enjoying the reading. (I'll talk more about it later, but that's the truth about that book: it was too unnerving for me.) 
 It is easy to empathise with the main character, to be fascinated, the same time he is, with this whole group of people and how weird and interesting they are. You get to know these characters from the start, you and Richard, both meet the characters at the same time and you both discover their secrets gradually--and they have MANY MANY MANY secrets. That was really great and turned the novel into a page turner. 
 Conclusion? The book is magnificently written, and magnetically too: there were moments I was actually having a bad time reading this, but I couldn't stop. I finished the book and I couldn't even sleep. It's not that it's scary, it's not, it's simply dark and devastating. I couldn't get the book off my mind for the 3 days that I was reading it--I couldn't stop thinking about it... But I'm not sure that in a good way. It definitely caused an impression on me, but I'm not sure the quality of the book was worth how much it disturbed and upset me.