2015 was a strong year for fiction. The big commercial juggernaut was, no surprise, 'Go Set a Watchman' by Harper Lee. The hype was immense, treating it like a new 'To Kill a Mockingbird,' though reception was...mixed. I thought it read more like an early draft, fascinating for literary historians but not the masterpiece people wanted. Paula Hawkins' 'The Girl on the Train' absolutely dominated the psychological thriller space that year. It felt like everyone on my commute was reading it. The unreliable narrator trend really hit its stride there.
Beyond those, I remember 'The Nightingale' by Kristin Hannah gaining incredible word-of-mouth momentum. It didn't top the charts immediately but had serious legs, becoming a book club staple. On the genre side, Andy Weir's 'The Martian' was huge, bridging sci-fi and mainstream appeal in a way few books do. The movie helped, but the novel's unique, problem-solving voice was a massive draw. Looking back, it was a year where female-authored thrillers and historical epics really commanded the shelves.