' and from what I can gather, the book has sold over 500,000 copies worldwide. The numbers are impressive, especially considering how niche the genre can be. The book gained traction after being featured in several book clubs and online communities, which really boosted its visibility. Fans of suspenseful, time-twisting narratives seem to adore it, and the word-of-mouth recommendations have been phenomenal. I remember seeing it pop up everywhere on BookTok last year, which definitely contributed to the spike in sales. It's one of those books that just keeps finding new readers.