New to the Gatorverse
Begin with InvestiGators, book #1, for Mango and Brash's first case and an introduction to S.U.I.T.
Book Series · 9 Books
InvestiGators Books
In order from InvestiGators to Weather or Not.
Mango and Brash are alligator secret agents who travel through toilets, solve pun-filled mysteries, and protect the world with Very Exciting Spy Technology. The colorful graphic novels combine detective clues with slapstick action and an expanding cast of animal agents.
Reviewed by the Bookroo Editors Updated
Reading order
How to Read the InvestiGators Books
Start with InvestiGators and read the nine numbered volumes through Weather or Not. Cases have their own comic mysteries, but villains, agency changes, and friendships carry from one book to the next.
Case Files is an unnumbered interactive collection in which readers help Mango and Brash solve six mysteries. It was published between Class Action and Weather or Not, but Macmillan identifies Weather or Not—not Case Files—as Volume 9.
Agents of S.U.I.T. follows supporting agents on their own missions. Four volumes are published; Tomb and Gloom is Volume 5 but is scheduled for February 16, 2027 and is not counted on this page yet.
Sources: Macmillan's official InvestiGators series page, Macmillan's Weather or Not volume page, Macmillan's Agents of S.U.I.T. series page.
For parents
What Parents Should Know
Expect cartoon fights, chases, captures, explosions, bizarre villains, and frequent toilet jokes. Characters face danger and sometimes appear defeated, but the colorful artwork and nonstop puns keep the tone comic rather than realistic or frightening.
The panels can be visually busy and the books use acronyms, wordplay, and recurring characters. Children who enjoy rereading illustrations for clues and jokes may find that density rewarding; very new graphic-novel readers may benefit from starting with the first book together.
Where to start
Where Should My Child Start?
Start with the main duo before moving to the larger agency cast or the interactive mysteries.
Wants more secret agents
Try Agents of S.U.I.T. after meeting the agency in the main books. The spin-off follows other agents on separate missions.
Where the story begins
First Book in the Series
Graphic Nov.
Sale price
$1248
Book #1 · Chapter Book · Ages 7–10 · 2020
InvestiGators
A group of alligator investigators solve a mystery involving a missing chef, a stolen scientific invention, and a triceratops escape artist.
208 pages· 8,763 words· Est. 1.5 hour read
$12.99Save 4%
Hardcover
Summary: Join Mango and Brash, the alligator duo of the Special Undercover Investigation Teams, as they dive into the sewers to solve two perplexing mysteries. Armed with quirky gadgets and unconventional travel methods, these agents face off against cunning villains. Can they piece together the clues and capture the crooks, or will their slippery foes escape? With humor and unexpected twists, this adventure promises a wild ride through the underbelly of crime-fighting.
Main series · 9 numbered graphic novels
Mango and Brash's Cases
9 books · Published 2020–2026
Read these connected spy mysteries in numbered order through Weather or Not, the publisher's official Volume 9.
#1
#1 in Series
Graphic Nov.
Sale price
$1248
InvestiGators
Chapter Book · Ages 7–10 · 2020
A group of alligator investigators solve a mystery involving a missing chef, a stolen scientific invention, and a triceratops escape artist.
#2
#2 in Series
Graphic Nov.
Sale price
$1248
Take the Plunge
Chapter Book · Ages 7–9 · 2020
Secret agents face a sewer sabotage. Can they clear their names before the city sinks?
#3
#3 in Series
Graphic Nov.
Sale price
$1248
Off the Hook
Chapter Book · Ages 7–10 · 2021
A secret agent must stop a villainous waffle from taking over the city.
#4
#4 in Series
Graphic Nov.
Sale price
$1248
Ants in Our P.A.N.T.S.
Chapter Book · Ages 7–10 · 2021
Can Mango and RoboBrash stop rampaging giant ants and outsmart villainous masterminds?
#5
#5 in Series
Graphic Nov.
Sale price
$1248
Braver and Boulder
Chapter Book · Ages 7–9 · 2022
Secret agents face a towering challenge and a rocky mystery beneath the surface.
#6
#6 in Series
Graphic Nov.
Sale price
$1248
Heist and Seek
Chapter Book · Ages 7–10 · 2022
A group of investigators try to solve a mystery involving stolen paintings and a museum gala.
#7
#7 in Series
Graphic Nov.
Sale price
$1248
All Tide Up
Chapter Book · Ages 7–10 · 2023
A group of investigators try to solve the mystery of a missing cruise ship and its passengers.
#8
#8 in Series
Graphic Nov.
Sale price
$1248
Class Action
Chapter Book · Ages 8–12 · 2024
Alligator agents go undercover in middle school to solve a mascot mystery.
#9
#9 in Series
Graphic Nov.
Sale price
$1248
Weather or Not
Chapter Book · Ages 7–10 · 2026
City's water turns to milk. Can the InvestiGators solve the mystery?
Four published spin-off missions
InvestiGators: Agents of S.U.I.T.
4 books · Published 2023–2026
Supporting agents take the lead in this related graphic-novel series. Volume 5 is forthcoming in February 2027 and is not included among the four published books.
#1
#1 in Series
Graphic Nov.
Sale price
$1049
Agents of S.U.I.T.
Picture Book · Ages 7–10 · 2023
A chameleon agent must solve a mystery involving crop circles and aliens.
#2
#2 in Series
Graphic Nov.
Sale price
$1248
From Badger to Worse
Chapter Book · Ages 7–9 · 2024
Bumbling agents uncover secrets beneath tropical sands. Can they solve the case without their gadgets?
#3
#3 in Series
Graphic Nov.
Sale price
$1248
Wild Ghost Chase
Chapter Book · Ages 7–10 · 2025
A ghostly mystery haunts S.U.I.T. agents. Can they solve it before it's too late?
#4
#4 in Series
Graphic Nov.
Sale price
$1248
Sew Much Trouble
Chapter Book · Ages 7–10 · 2026
A stolen food truck, secret sauce, and a team divided. Can they solve the mystery?
Interactive companion
InvestiGators: Case Files
1 book · Published 2025
Six unnumbered mysteries invite readers to examine clues and solve cases alongside Mango and Brash. This is bonus casework rather than main-series Volume 9.
Graphic Nov.
Sale price
$1248
Case Files
Chapter Book · Ages 7–10 · 2025
Join agents on a quest to crack six new mysteries with interactive sleuthing.
Good to know
Common Questions
How many books are in the InvestiGators series?
There are 9 books in the InvestiGators series. It began with InvestiGators in 2020, and the newest book, Weather or Not, was published in 2026.
What order should you read the InvestiGators books in?
Start with InvestiGators and follow the series order — the books above are numbered #1 through #9.
What ages are the InvestiGators books best for?
The series is best for ages 7–12, based on the age ranges of the individual books.
Which InvestiGators book is the longest?
Weather or Not (Book #9) is the longest book in the series at 10,515 words (208 pages).
Which InvestiGators book is the shortest?
Off the Hook (Book #3) is the shortest at 8,739 words (208 pages).
The people
The Creative Behind the Books
The people who bring InvestiGators to life.
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