Book Series · 4 Books

Worst Week Ever! Books

In order from Monday to Thursday.

The Worst Week Ever! series is a set of 4 chapter books by Matt Cosgrove and Eva Amores, published between 2021 and 2024. Written for ages 8–12, most books run about 190 pages.

Monday
Wednesday
Tuesday (Worst Week Ever #2)
Thursday
Monday
Where the story begins

First Book in the Series

Monday
Graphic Nov.
Sale price
$759
Book #1 · Chapter Book · Ages 8–12 · 2021

Monday

By Matt Cosgrove (Author/Illustrator), Eva Amores

Justin's week spirals into chaos with vampires, bullies, and disappearing swim trunks.

192 pages· 16,093 words· Est. 3 hour read
$7.99Save 5%
Paperback
Summary: Justin Chase is having the worst week ever. His mom's new husband might be a vampire, his dad's driving a toilet on wheels, and his cat's missing. On top of that, a bully targets him on his first day at a new school. Now, he's stuck on a diving board in vanishing swim trunks, and it's only Monday. Can Justin survive this whirlwind of disasters?
In reading order

Worst Week Ever! Series

4 books · Published 2021–2024

#1
#1 in Series
Graphic Nov.
Sale price
$759

Monday

Chapter Book · Ages 8–12 · 2021

Justin's week spirals into chaos with vampires, bullies, and disappearing swim trunks.

#3
Sale price
$759

Wednesday

Chapter Book · Ages 8–12 · 2022

Stranded with sharks and an arch-enemy, Justin's week spirals into chaos.

#2
Sale price
$759

Tuesday (Worst Week Ever #2)

Chapter Book · Ages 8–12 · 2023

A disastrous week spirals as viral fame and school chaos collide.

#4
Sale price
$759

Thursday

Chapter Book · Ages 8–12 · 2024

Mistaken identity leads to chaos and a kidnapping for Justin.

Good to know

Common Questions

How many books are in the Worst Week Ever! series?

There are 4 books in the Worst Week Ever! series. It began with Monday in 2021, and the newest book, Thursday, was published in 2024.

What order should you read the Worst Week Ever! books in?

Start with Monday and follow the series order — the books above are numbered #1 through #4.

What ages are the Worst Week Ever! books best for?

The series is best for ages 8–12, based on the age ranges of the individual books.

The people

The Creatives Behind the Books

The authors and illustrators who bring Worst Week Ever! to life.

01

Matt Cosgrove

Author & Illustrator
02

Eva Amores

Author

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