Case File

About the Book

Mr. MacGillicutty's Detective Agency Cover

Danny's mittens are missing, and this is no ordinary problem. He has looked everywhere — under the bed, at the North Pole, and even in places that make absolutely no sense. Clearly, only a true detective can handle a case of this importance. Enter Mr. MacGillicutty: a very serious investigator with a talent for tiny mysteries. Full of family warmth, gentle humor, and childlike imagination, this story turns one small lost item into a grand investigation.

The case of the Wandering Author

I grew up in New York City in a busy neighborhood called the Upper West Side. Until I was eight years old, I hated reading. The books I was given at school were terribly boring to me.

That all changed one summer. My parents decided we should visit Europe, and our first stop was London. The plane ride felt endless. My mother had a solution. She brought along a book my older brothers had read — one of the Hardy Boys mysteries. I couldn't get enough of it. But after a while, my mother said, "If you want to know what happens next, you'll have to read it yourself." From that moment on, I never stopped reading.

When we arrived in London, they took me to a bookstore. I thought it was the most fascinating place I had ever visited. I chose Swallows and Amazons by Arthur Ransome — and I was completely hooked.

Years later, I had two young sons of my own, and I thought it would be nice to write a book for them. I outlined the story and created the characters... but then life got busy, and I never finished it.

Now I am 70 years old. While going through old papers, I found those notes again — Mr. MacGillicutty's Detective Agency, Danny, Joyce, Mom, and of course Mr. M were all still there, waiting. I knew it was time to finish my first book. But not my last.

I hope you enjoy reading it as much as I enjoyed writing it.

A small shelf of stories that helped shape this one—where mystery, adventure is taken seriously, and small things are never really small.

The Hardy Boys Franklin W. Dixon

The book my mother handed me on a plane to London. I never gave it back.

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Swallows and Amazons Arthur Ransome

Bought in a London bookshop when I was eight. Children, a sailboat, a lake and explorations.

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The Wonderful Wizard of Oz L. Frank Baum

A girl from Kansas lands in Oz and finally finds her way home.

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Tom Swift Victor Appleton

Boy inventor, impossible machines. I read these for the gadgets and stayed for the adventures.

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The Chronicles of Narnia C. S. Lewis

The door is always closer than you think.

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The Wind in the Willows Kenneth Grahame

Small animals taking small matters extremely seriously. Mr. MacGillicutty owes this one a debt.

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From the Mixed-Up Files of Mrs. Basil E. Frankweiler E. L. Konigsburg

Two kids, a museum, and a genuine mystery.

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For Young Detectives Visiting London

Some mysteries are best solved in the real world. A good guide can turn an ordinary street into a story — and a simple question into a case worth solving.

London Red Phone Box

Family-Friendly London Tours with Context Travel

Thoughtful, kid-friendly ways to explore London with curious young minds.

Explore London Tours

If you book a tour through this link, Mr. MacGillicutty's Detective Agency may earn a commission at no extra cost to you.

Mr. MacGillicutty's Detective Agency Book Cover

The Case of the Missing Mittens

A small mystery.
A very serious detective.
A case that requires careful thinking...
close observation...
and possibly cookies.

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