Half-Moon Investigations

Book review by
Matt Berman, Common Sense Media
Half-Moon Investigations Book Poster Image
Parents recommendPopular with kids
Clever detective fiction for middle-graders.

Parents say

age 9+
Based on 8 reviews

Kids say

age 10+
Based on 13 reviews

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A lot or a little?

The parents' guide to what's in this book.

Positive Messages

Quite a few sexist remarks, both from characters and from the author.


Fletcher is beaten severely enough to be hospitalized.


Computer and mp3 player brands mentioned approvingly.

Drinking, Drugs & Smoking

What parents need to know

Parents need to know that Fletcher is beaten with a club into unconsciousness and hospitalized. Also, the adults in this story are mostly useless, and the most appealing characters are petty criminals.

User Reviews

  • Parents say
  • Kids say
Adult Written byidkwatmyusernameis April 30, 2015
Adult Written byacr3079 April 20, 2013

Great Read

We spend family time listening to books together. My son does not like to read, so I've introduced the next best thing. Books on Tape. We both enjoyed... Continue reading
Kid, 11 years old February 20, 2020

Another Colfer excellence!!!

You might recognise me from the Artemis Fowl reviews (go check those out, the books are by the same author) anyways, the reason i picked up this book was becaus... Continue reading
Kid, 10 years old October 28, 2013


Im a ten year old and had to read this for school, it was ok for kids. Younger kids probably wont get it though.

What's the story?

Fletcher Moon, known around school as \"Half-Moon\" due to his size, has qualified as a private eye after taking Internet classes. So far he has only used it to solve petty schoolyard crimes, with payment in candy. But now he's on to something much bigger -- and more dangerous.

There's a conspiracy going on in town, and possibly more than one. They involve a local criminal family, a club of pink-clad girly-girls, a school talent show, arson, theft, and assault. And soon Fletcher finds himself in way over his head, as he is framed for arson and flees custody with a known delinquent, who may be more than he seems.

Is it any good?

Eoin Colfer, author of the bestselling Artemis Fowl series, brings his trademark combination of humor, brilliant kids, gritty violence, and likable villains to a new setting. Fletcher is a nerdy wimp of a kid detective, with a sharp mind and an inner core of steel, who narrates the story in the style of a '40s potboiler. Much more interesting is his reluctant partner, Red -- son of a local gangster, with a heart of gold, a short fuse, the gift of cool charisma, and the skills of his heritage.

Fletcher receives an extraordinary lack of sympathy from any adult, including his parents, after he is beaten badly enough to require surgery, which, by the way, was more violent than necessary for the storyline. When a child is beaten unconscious by an adult with a club, it doesn't register as the humorous, cartoon violence the author seems to think it is. But overall this is a satisfying romp.

Talk to your kids about ...

  • Families can talk about the deductive techniques Fletcher uses. How does he figure out who the real culprit is? Were you able to figure it out before he did? Also, what would it be like to be Red? Why do people treat him the way they do? Why do they assume he's up to no good?

Book details

  • Author: Eoin Colfer
  • Genre: Mystery
  • Book type: Fiction
  • Publisher: Disney Publishing
  • Publication date: April 24, 2006
  • Publisher's recommended age(s): 11 - 14
  • Number of pages: 290
  • Available on: Paperback, Audiobook (unabridged), Hardback, Kindle
  • Last updated: December 5, 2019

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