From ancient snake-swallowing-itself myths to modern novels that end where they begin, the loop is one of storytelling's oldest and strangest tricks.
Sometimes the antagonist isn't a person but the order of events themselves — and these books make chronology do the dirty work.
The best twists don't just surprise you at the end — they reach back and change everything you already read.
Nested narratives — stories inside stories inside stories — turn reading into an echo chamber where every layer comments on the next.
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