Browse Top Lists Blog Fern Picks About

Loading...

Firefly & Fern

The right book changes everything.

Independent book recommendations for young readers ages 0-18.

Discover

Browse
Fern Book Finder
Top Lists
New Arrivals
Age Groups

Resources

Blog
Age Guide
Newsletter

Company

About
Contact
Privacy
Terms

2026 Firefly & Fern. All rights reserved.

Firefly & Fern is an independent platform. We are not affiliated with any publisher. We use affiliate links — when you buy through our links, we may earn a small commission at no extra cost to you.

Theme

conspiracy

Books about conspiracy for readers of all ages.

Cover of Sleeper Agenda (The Sleeper Conspiracy, Part 2)

Sleeper Agenda (The Sleeper Conspiracy, Part 2)

Tom Sniegoski

Ages 13–18conspiracyidentity

Cover of Sleeper Code

Sleeper Code

Tom Sniegoski

Ages 10–14mysteryconspiracy

Cover of Scintillate

Scintillate

Tracy Clark

Ages 13–18paranormal mysteryconspiracy

Cover of Mayhem

Mayhem

Jeffrey Salane

Ages 10–14adventuremystery

Cover of Randoms

Randoms

David Liss

Ages 12–16friendshipteamwork

Cover of Dweeb

Dweeb

Aaron Starmer

Ages 10–14mysteryconspiracy

Cover of Bloody Monday, 5

Bloody Monday, 5

樹林伸

Ages 14–18technology and securityconspiracy

Cover of The traitor's game

The traitor's game

Jennifer A. Nielsen

Ages 12–16loyaltycourage

Cover of Knife edge

Knife edge

Andrew Lane

Ages 12–16mysteryconspiracy

Cover of Second Guard

Second Guard

J. D. Vaughn

Ages 10–15loyaltycourage

Cover of The False Princess

The False Princess

Eilis O'Neal

Ages 10–15identityself-discovery

Cover of Truthers

Truthers

Geoffrey Girard

Ages 13–18conspiracytruth and deception

Cover of Twice dead

Twice dead

Caitlin Seal

Ages 11–16magicself-discovery

Cover of Sacrifice

Sacrifice

Cayla Kluver

Ages 13–18magicconspiracy

Cover of Il cimitero di Praga

Il cimitero di Praga

Umberto Eco

Ages 18–18historical fictionconspiracy

Cover of Crash

Crash

Sean Williams

Ages 10–15friendshipconspiracy

Cover of Sylo

Sylo

D. J. MacHale

Ages 12–16mysterysurvival

Cover of Project Pandora (Assassin Fall)

Project Pandora (Assassin Fall)

Aden Polydoros

Ages 14–18survivalidentity

Cover of Knightley & son

Knightley & son

Rohan Gavin

Ages 9–14mysteryfather-son relationship

Cover of The Black Crow conspiracy

The Black Crow conspiracy

Christopher Edge

Ages 10–15mysteryconspiracy

Cover of The lost conspiracy

The lost conspiracy

Frances Hardinge

Ages 10–14sistersmystery

Cover of The secret prophecy

The secret prophecy

Herbie Brennan

Ages 10–15mysterysecret societies

Cover of Adaptation

Adaptation

Malinda Lo

Ages 13–18self-discoverysurvival

Cover of The hypnotists

The hypnotists

Gordon Korman

Ages 9–14mysteryfriendship