Sienna Mercer Books

My Sister the Vampire 1

By Sienna Mercer

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My Sister the Vampire, No. 1: Switched

By Sienna Mercer

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Upon moving to Franklin Grove, eighth-grader Olivia Abbott, a pink-loving cheerleader, learns that she has a twin sister, Ivy Vega, whose "goth" appearance hides a weird secret.

My Sister the Vampire 2: Fangtastic!

By Sienna Mercer

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Eighth-grade twins Olivia and Ivy and their friends try to prevent a nosy television reporter, Serena Star, from uncovering the secret community of vampires in Franklin Grove.

My Sister the Vampire 3: Re-Vamped!

By Sienna Mercer

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When Olivia and Ivy tell their classmates and parents that they are identical twins, the word spreads to the vampire officials and Olivia must prove that she is worthy of keeping Ivy's true identity.

My Sister the Vampire 4: Vampalicious!

By Sienna Mercer

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After discovering that she has a twin sister, Ivy, who is a vampire, Olivia risks losing her when their father decides to move to Europe with Ivy.

Switched

By Sienna Mercer

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Upon moving to Franklin Grove, eighth-grader Olivia Abbott, a pink-loving cheerleader, learns that she has a twin sister, Ivy Vega, whose "goth" appearance hides a weird secret.

Fangtastic

By Sienna Mercer

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Eighth-grade twins Olivia and Ivy and their friends try to prevent a nosy television reporter, Serena Star, from uncovering the secret community of vampires in Franklin Grove.

Vampalicious

By Sienna Mercer

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Vampalicious

By Sienna Mercer

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United with her twin sister Ivy, a vampire, for only a few months, Olivia risks losing her when their father decides to move to Europe and to take Ivy with him.

The Complete My Sister the Vampire Set Books 1 4 Switched Fangtastic Re Vamped and Vampalicious 4 Book Set

By Sienna Mercer

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How to Convert ISBN-10 to ISBN-13 (and Vice Versa): A Complete Guide

If you’re in the world of books—whether as a publisher, librarian, bookseller, or avid collector—you’ve likely come across the terms ISBN-10 and ISBN-13. Understanding these formats and knowing how to convert between them is essential for maintaining consistency and compatibility in book records. In this post, we’ll cover everything you need to know about ISBN conversions, step by step.

What is an EAN and How Does it Relate to an ISBN?

If you’ve ever purchased a product online or in a store, you’ve likely come across a barcode. Behind these barcodes lies a standardized system that makes modern commerce possible. Two key codes often encountered are the EAN (European Article Number) and ISBN (International Standard Book Number). But what are they, how are they connected, and why are they so crucial? Let’s explore.