The Thirteenth House

The Thirteenth House
Cost	5
Genre	Mystery Romance
Series	The Thirteenth House
Book Number	1
Weekly Released	Wednesday
Release Date	Early Access October 1, 2025 - present General Release November 2025

The Thirteenth House is the first and thus far only book of The Thirteenth House series.

Summary

Something sinister brews in the esteemed halls of Arthur Hawthorne University, but first you need to find a way to fit in with the rich and famous.

Chapters

Chapter 1: Mysterious Beginnings

Something sinister brews in the esteemed halls of Arthur Hawthorne University, but first you need to find a way to fit in with the rich and famous.

Chapter 2: Missed Connections

Classes begin, and so does your search for Piper. However, every answer you get only leads to more questions.

Chapter 3: The Investigation Begins

The truth about Piper is still out of reach, so you take matters into your own hands.

Chapter 4: And Nothing Was Ever the Same

You follow Piper's breadcrumbs. Will you find answers, or has the trail grown cold already?

Chapter 5: A Not So Familiar Face

Whatever Piper has become was the last thing you were expecting. But you're not giving up.

Chapter 6: Between the Pages

A new lead pops up out of nowhere, but can you trust it?

Chapter 7: Lying Low

You have a hunch the Zodiac Society is onto you, so it's time to take it easy.

Chapter 8: Winter Formal

The event you've been waiting for is finally here. You're on high alert for Zodiac Society activity on and off the dancefloor.

Chapter 9: Spreading Sickness

Piper's condition is worrying. What has she gotten herself into? And how is the Zodiac Society involved?

Gameplay Features

There are four skills in this book — courage, insight, influence, and fortitude — with each skill corresponding to classical elements and astrological signs.

• Courage is the fire skill. It aligns with Aries, Sagittarius, and Leo.
• Insight is the water skill. It aligns with Cancer, Pisces, and Scorpio.
• Influence is the air skill. It aligns with Libra, Aquarius, and Gemini.
• Fortitude is the earth skill. It aligns with Virgo, Capricorn, and Taurus.

A brief quiz early in Chapter 1 will determine your base skill and give you a slight starter boost in that stat.

You will continue to gain points in all skills throughout the book in various ways, such as hanging out with your friends or interacting with faculty.

In some cases, you must choose to prioritize improving one stat over another.

Certain options can only be chosen if you have enough points in a particular skill.

Gallery

Sneak Peeks

• Early Access
• General Release

Chapter 8 Winter Formal Outfits Preview

Pre-Book Sneak Peeks & Information

Cover Preview

Choices Insiders (September 2025)

Sneak Peek #1

Piper Lancaster Sneak Peek

Jack Amrani Sneak Peek

Sneak Peek #2

Angelica Swansworth Sneak Peek

Molly Montgomery Sneak Peek

Student Type Quiz

Lance Vanderbjörn Sneak Peek

Calista Castello Sneak Peek

Felix North Sneak Peek

Your Character Sneak Peek

Choices Insiders (November 2025)

Featured Locations

• Arthur Hawthorne University

• Private Residences
• Misc

Professor Summers' Home

Vanderbjörn Mansion Exterior

Vanderbjörn Mansion Foyer

Vanderbjörn Mansion Pool

Dream Sanctuary

Restaurant

Club

Museum/Charity Gala Venue

Museum Gardens

Miscellaneous

• Promo
• In-Game
• Items

Official Cover

Thumbnail Cover

Full Cover

In-App Release Announcement

Blog Cover

Blog Promo

Title Screen

Hot Tea

Shawarma

Fancy Dinner

Zodiac Society Photobook

Old Zodiac Society Photo

Landscape Painting

Soundtracks

Visit the soundtrack page for more soundtracks from Choices.

Spoilers

• The book was first announced in the September issue of Choices Insiders.
• On September 19, 2025, the release date was revealed in-app to be October 1, 2025.
• On September 24, 2025, PB posted a sneak peek in the form of a mock invitation to Arthur Hawthorne University, the primary setting of the story.
  • Shortly afterwards, they posted a sneak peek of your best friend Piper Lancaster.
• On September 25, 2025, PB posted a sneak peek of Jack Amrani.
  • Later that day, they asked social media followers which item they'd pack first for their time at AHU, teasing your character's backstory in the process.
• On September 26, 2025, PB posted a sneak peek of Angelica Swansworth.
• On September 27, 2025, PB posted a sneak peek of Molly Montgomery.
  • Later that day, PB posted a blog quiz to help players determine what type of student they would be at AHU.
• On September 28, 2925, PB posted a sneak peek of Lance Vanderbjörn.
• On September 29, 2025, PB posted a sneak peek of Calista Castello.
• On September 30, 2025, PB posted a sneak peek of Felix North.
  • Later that day, they posted sneak peeks of your character.
• On October 1, 2025, PB posted a Spotify playlist compiled by the writers for this book.
• On October 10, 2025, PB posted the book's blog.
  • On October 16, 2025, PB posted another advertisement for the blog.
• On October 27, 2025, PB posted a preview of your outfit options for the Winter Formal in Chapter 8.

Trivia

• In one path of Chapter 4, Lance mentions that he and Molly bonded over bingeing America's Most Eligible. This likely indicates The Thirteenth House takes place within the same universe as every other Choices story in which AME is a TV show.

Click here for the walkthrough of this book: The Thirteenth House Choices.