Never Coming Back / Hans Koppel / 393 pages

I couldn't put this book down!  I was simply riveted by it from start to finish... and was extraordinarily grateful that the author assuaged  curiosity by providing backstory at the end.  Ylva Zetterberg is kidnapped on her way home from work.  She is held captive and abused for eighteen months in a house across the street from her own home.  Her husband is suspected in her disappearance.  The horrific tragedy which has befallen Ylva is revenge for something that happened years ago among school mates.