Investigators of the Unknown

by Janet Taylor Lisle

3.33 · 6 ratings
book · children-books · fantasy · fiction · children · law-enforcement · friendship · young-adult · high-fantasy · family · animals · supernatural · fae · teens · mystery · paranormal · sword-sorcery · middle-grade · female-author · death

Investigators of the Unknown: Similar series

The Sisters Grimm

by Michael Buckley

4.29 · 359 ratings
young-adult · retellings · children · humor · fiction · mystery · fantasy · middle-grade · myths · book · fairy-tale · law-enforcement · magic · family · action-adventure · paranormal · audiobook · contemporary · fae · urban-fantasy
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Nevermoor

by Jessica Townsend

4.43 · 137 ratings
friendship · children-books · fiction · fantasy · magic · children · young-adult · book · middle-grade · paranormal · female-mc · action-adventure · humor · mystery · high-fantasy · family · animals · female-author · supernatural · audiobook
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The 39 Clues: Cahills vs. Vespers

by Gordon Korman

4.15 · 165 ratings
fiction · mystery · fantasy · espionage · action-adventure · family · law-enforcement · historical-fiction · realistic · children · young-adult · book · audiobook · middle-grade · suspense · political-intrigue · friendship · teens · siblings · children-books
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Secret

by Pseudonymous Bosch

4.22 · 164 ratings
law-enforcement · children · mystery · humor · fiction · action-adventure · children-books · fantasy · middle-grade · young-adult · book · magic · realistic · comedy · friendship · audiobook · contemporary · suspense · paranormal · supernatural
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The Mysterious Benedict Society

by Trenton Lee Stewart

4.29 · 187 ratings
children · law-enforcement · action-adventure · fiction · children-books · mystery · friendship · middle-grade · book · young-adult · realistic · fantasy · humor · found-family · contemporary · family · literary · audiobook · classics · high-school
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Kiki Strike

by Kirsten Miller

4.12 · 55 ratings
urban-fantasy · children · young-adult · book · contemporary · middle-grade · political-intrigue · fantasy · action-adventure · fiction · mystery · espionage · crime · law-enforcement · paranormal · urban · female-mc · friendship · children-books · womens-fiction
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Small Spaces

by Katherine Arden

4.00 · 70 ratings
horror · spooky · fiction · children-books · friendship · mystery · fantasy · middle-grade · paranormal · young-adult · urban-fantasy · book · magic · children · magical-realism · dark · action-adventure · family · audiobook · contemporary
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Cat Royal Adventures

by Julia Golding

4.18 · 86 ratings
book · historical-fiction · young-adult · middle-grade · mystery · action-adventure · fiction · female-mc · historical · realistic · alpha-mc · children-books · children · nautical · heist · teens · friendship · fantasy · law-enforcement · female-author
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Serafina

by Robert Beatty

4.19 · 86 ratings
book · animals · fiction · action-adventure · fantasy · law-enforcement · historical-fiction · horror · paranormal · young-adult · audiobook · middle-grade · children-books · mystery · children · historical · magic · gothic · supernatural · friendship
All books in this series  ❯

Thirteen Treasures

by Michelle Harrison

4.15 · 68 ratings
fiction · fantasy · action-adventure · friendship · mystery · female-mc · magic · children · young-adult · fae · supernatural · contemporary · middle-grade · paranormal · family · fairy-tale · urban-fantasy · low-fantasy · children-books · law-enforcement
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Winterhouse

by Ben Guterson

3.98 · 46 ratings
young-adult · orphans · supernatural · urban-fantasy · book · audiobook · middle-grade · paranormal · fantasy · action-adventure · fiction · low-fantasy · children-books · mystery · friendship · family · season-winter · magic · law-enforcement · children
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Nagspeake Books

by Kate Milford

3.99 · 115 ratings
middle-grade · young-adult · book · children · fiction · fantasy · action-adventure · children-books · mystery · audiobook · paranormal · historical-fiction · myths · supernatural · magic · magical-realism · retellings · low-fantasy · family · suspense
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The Greystone Secrets

by Margaret Peterson Haddix

3.90 · 42 ratings
friendship · fantasy · mystery · action-adventure · children-books · fiction · family · law-enforcement · children · young-adult · book · contemporary · audiobook · middle-grade · dystopia · realistic · urban-fantasy · suspense · low-fantasy · siblings
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The Legends of Eerie-on-Sea

by Thomas Taylor

4.17 · 42 ratings
magic · horror · children · retellings · fiction · action-adventure · children-books · friendship · mystery · fantasy · monsters · audiobook · middle-grade · myths · paranormal · urban-fantasy · book · law-enforcement · spooky · humor
All books in this series  ❯

York

by Laura Ruby

4.00 · 40 ratings
historical · book · young-adult · middle-grade · audiobook · steampunk · industrial-era · alternate-history · friendship · fantasy · fiction · action-adventure · children-books · mystery · children · historical-fiction · law-enforcement · dystopia · urban · realistic
All books in this series  ❯

Floors

by Patrick Carman

4.00 · 38 ratings
fiction · humor · action-adventure · children-books · mystery · young-adult · fantasy · book · law-enforcement · audiobook · contemporary · magic · middle-grade · children · comedy · friendship · urban · low-fantasy · animals · family
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The Secret Zoo

by Bryan Chick

4.26 · 58 ratings
book · middle-grade · family · animals · friendship · fantasy · action-adventure · fiction · children-books · children · law-enforcement · mystery · magic · young-adult · urban-fantasy · suspense · xenofiction · paranormal · political-intrigue · myths
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Mister Max

by Cynthia Voigt

3.79 · 34 ratings
historical · book · family · friendship · young-adult · fiction · action-adventure · children-books · mystery · fantasy · coming-of-age · children · audiobook · historical-fiction · law-enforcement · middle-grade · drama · humor · realistic · steampunk
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Lewis Barnavelt

by John Bellairs

3.83 · 136 ratings
horror · children · children-books · fiction · mystery · fantasy · young-adult · book · magic · audiobook · paranormal · law-enforcement · supernatural · gothic · action-adventure · friendship · middle-grade · ghosts · magical-realism · low-fantasy
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The Battle of the Beetles

by M.G. Leonard

4.21 · 28 ratings
book · family · animals · action-adventure · children-books · humor · fiction · mystery · friendship · children · audiobook · middle-grade · fantasy · young-adult · outdoors · law-enforcement · christian · bullying · contemporary · crime
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Pals in Peril

by M.T. Anderson

3.74 · 38 ratings
young-adult · book · middle-grade · fiction · action-adventure · children-books · humor · law-enforcement · children · political-intrigue · mystery · espionage · comedy · audiobook · fantasy · friendship · family · horror · sci-fi · holidays
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The Haunted Library

by Dori Hillestad Butler

4.14 · 57 ratings
middle-grade · law-enforcement · horror · children · paranormal · mystery · children-books · fiction · book · fantasy · contemporary · ghosts · supernatural · friendship · young-adult · action-adventure · humor · family · siblings · crime
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Invisible Friend

by Louise Arnold

3.87 · 15 ratings
fiction · children-books · paranormal · fantasy · children · middle-grade · horror · book · ghosts · supernatural · friendship · humor · action-adventure · young-adult · law-enforcement · female-author · kidnapping · mystery
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Unofficial Overworld Adventures

by Danica Davidson

4.22 · 9 ratings
children · friendship · humor · fiction · action-adventure · children-books · book · law-enforcement · young-adult · fantasy · contemporary · audiobook · litrpg · middle-grade · heroic-fantasy · poc-mc · zombies · paranormal
All books in this series  ❯