Book cover for "Overgrowth" by Mira Grant. A dark, textured background features thin blue celestial grid lines and text at the top reading "YOU WERE WARNED". In the center, a luminous planet Earth is ensnared by a thorny, twisting green and red vine. Below, large red and orange serif text reads "OVERGROWTH", with the author's name "MIRA GRANT" in white capital letters at the bottom.

Title: Overgrowth

Author: Mira Grant aka

Cover artist: Christopher Gibbs

Cover designer: Esther S. Kim

Publisher: Tor Nightfire aka

ISBN13: 978-1250768230 (Hardcover) / 978-1250768247 (Paperback)

Recommended audience: Fans of adult horror / science fiction.

Content warnings: body horror, child death, transphobia (depicted by antagonists).

Link to book page on Macmillan website

What I liked about the book:

The "reverse invasion" premise. Love that the protagonist has claimed since childhood that she's an alien disguised as a human being (instead of trying to hide it), and that the armada is coming to get her.

Love the diverse characters, character dynamics, and found family.

Especially loved the thought-provoking questions about "otherness" and belonging.

How I discovered the book:

I've been a longtime fan of the author (Seanan McGuire; Mira Grant is her horror pen name) but can't keep up with all of Seanan's wonderful book news.

I follow on Bluesky, however, and happened to see one of her posts:

Seanan McGuire's avatar
1mo

As we approach the twenty-first day of the month of September, I urge you all the remember the importance of being prepared for the alien plant invasion, which will be arriving any day. You were warned.

A thorny vine wraps around the Earth, blood red at the tips and menacing. The text reads YOU WERE WARNED | OVERGROWTH | MIRA GRANT.

I had assumed it was a new book, but found out that the title was already out! I'm glad that Seanan posted the eye-catching cover image along with her post.

Takeaways for book creators: It's worth posting when new versions of your book come out. Including a cover image, especially if it's a good image, will attract even more attention.

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