Sinai Unhinged is a cross-genre novel that blends sci-fi with suspense / thriller. Experiments go wrong in a particle accelerator research facility, driving scientists mad. Trying to help her friend who has fallen victim to the mysterious Complex, a therapist attempts to uncover what’s going on there and gets pulled into a strange and dangerous conflict of interests.
Okay, I have to say right away, I feel like it’s more fantasy than sci-fi, but it was recommended on a podcast as sci-fi, and once I’ve started reading it, I couldn’t stop. I believe it can be classified as science fantasy though — a mixed genre that combines elements of science fiction and fantasy.
This is definitely one of the classics that has a huge international fandom, but I only discovered it a couple of years ago. Those were the first sci-fi books by a female author, Lois McMaster Bujold, that I’ve read, and they got me completely hooked.