: A group of scientists use "string theory" to look into the past (a project called "ZigZag"). However, they soon realize that when you look into the past, something from the past begins to look back and hunt you down.

Zig-Zag’s vampire catalog is a great entry point for anyone in Chile or the broader Spanish-speaking world looking for high-quality, local, or curated supernatural fiction. It moves away from "sparkly" vampires toward something a bit more mysterious and visceral. for a school setting or narrative quality for a general reader? Literatura Juvenil - Editorial Zig-Zag

This is a classic mystery often associated with detective stories and supernatural elements.

If you are preparing a study guide for a book from regarding vampires or mystery, here is the standard framework used for their educational materials: