Basil and his trusty friend, Dawson, are hot on the trail of the evil Professor Ratigan. When Basil is invited to investigate a clue that might lead to the famous Lost Colony, Ratigan infiltrates into the very heart of Baker Street and steals the clue! Now it's a race to the top of a treacherous mountain in the Alps. Who will be the first to claim worldwide fame for the discovery of the Lost Colony of mice who disappeared more than four hundred years ago?

Basil is the Sherlock Holmes of the mouse world. He listens in on the cases of the great Sherlock Holmes at 221B Baker Street, to learn at the feet of the master. Then Basil can use that knowledge to solve mysteries among the mice of the world.

I love this story so much! I have always been a fan of the Great Mouse Detective cartoon, so I was delighted to discover that the movie was based on a book series. The writing is charming, the story is exciting, and the mystery is full of wild clues that only Basil can figure out. I also loved the adorable illustrations that bring the characters to life.

This chapter book would be perfect for young readers ages 6-10 who are starting to read on their own, but it is also enjoyable for older children to read. I loved reading it even as an adult!