You need to sign in or sign up before continuing.

The 52 Book Club's 2025 Challenge - hosted by the52bookclub

A crossover (set in a shared universe)
Prompts 28 and 29 are connected. Your book choice for 28 will influence prompt 29.

A shared universe is when two or more standalone stories take place in the same world setting with the same continuity. This means that one story has the potential to influence events in another story, or that characters from one standalone novel may bump into characters from another standalone novel. (Note: This is different than books in the same series, although books from separate series may share a universe.)
 
For this prompt, you may pick a book with a character crossover or character cameo (For example: the main character in book one enters a coffee shop and bumps into the main character from the author's previous novel). You might choose a location crossover (For example: the main character in one book visits or references a bar owned by a character in another book), or the book may reference events or information from another book. Books in a shared universe may or may not share characters.

Examples: Star Wars books, Stephen King's The Dark Tower series (It, The Stand, Salem's Lot, etc), Brandon Sanderson's Cosmere Universe (Elantris, Mistborn, Warbreaker, The Stormlight Archive, White Sand), The Last Bookshop in London and The Booklover's Library, Taylor Jenkins Reid (The Seven Husbands of Evelyn Hugo, Daisy Jones and the Six, Malibu Rising, Carrie Soto is Back), Abby Jimenez books, Marvel comics 
All books added
The Mystery of the Blue Train by Agatha Christie

The Mystery of the Blue Train

Hercule Poirot #6

Agatha Christie

317 pages • hardcover • 1928

fiction classics crime mystery mysterious medium-paced
Homeseeking by Karissa Chen

Homeseeking

Karissa Chen

17 hours, 13 minutes • audio • 2025

fiction historical literary romance emotional sad medium-paced
Supremacy: AI, ChatGPT, and the Race that Will Change the World by Parmy Olson

Supremacy: AI, ChatGPT, and the Race that Will Change the World

Parmy Olson

9 hours, 25 minutes • audio • 2024

nonfiction business computer science technology informative medium-paced
The Remedy by Suzanne Young

The Remedy

The Program #3

Suzanne Young

416 pages • hardcover • 2014

fiction science fiction young adult reflective fast-paced
Behind Every Good Man by Sara Goodman Confino

Behind Every Good Man

Sara Goodman Confino

9 hours, 2 minutes • audio • 2024

fiction feminism historical romance funny hopeful inspiring medium-paced
Raybearer by Jordan Ifueko

Raybearer

Raybearer #1

Jordan Ifueko

13 hours, 48 minutes • audio • 2020

fiction fantasy lgbtqia+ young adult adventurous emotional medium-paced
Fable by Adrienne Young

Fable

The World of the Narrows #1

Adrienne Young

357 pages • hardcover • 2020

fiction fantasy romance young adult adventurous medium-paced
The Lightning Thief by Rick Riordan

The Lightning Thief

Percy Jackson and the Olympians #1

Rick Riordan

377 pages • paperback • 2005

fiction fantasy middle grade adventurous funny lighthearted fast-paced
The Illustrated Mum by Jacqueline Wilson

The Illustrated Mum

Illustrated Mum #1

Jacqueline Wilson

292 pages • paperback • 1999

fiction middle grade emotional sad medium-paced
Before Dorothy by Hazel Gaynor

Before Dorothy

Hazel Gaynor

352 pages • paperback • 2025

fiction historical medium-paced