Vicious

I loved it. Would have loved it even more if I haven't taken a month long break - but you know, life..

Well nevertheless: Go read it. Please.
This book needs honestly more recognition.
But I have to say that it is definitely not for everyone.
So it's more like:
Read it if you like morally ambiguous, cunning and ambitious or rather dedicated main characters.
If you like a story that takes it's time but can still remain a certain tension that last throughout the pages.
If you like this hate-admiration friendship that Charles Xavier and Eric Lehnsherr (You know, those two from X-Men) had. But keep in mind - Victor and Eli are still new, compelling, original characters and not just bland rip-offs.
And last but not least, if you enjoy a certain level of viciousness.

But please don't expect an action packed novel, in which everybody shoots their superpowers at one another in with an epic final fight. This novel is definitely more subtle than this.

Oh and thanks to a Clockwork Reader for the recommendation - it is quite frankly a perfect Slytherin read. (Go watch her Hogwarts house book recommendations. They're great.)