Book 7 MARCEL and the Shakespaere Letter

I read "MARCEL and the Shakesparer Letter"

Marcel is a Freanc mouse.
He is a detective and he lives in France.
He visits his friend Henry,which lives in Londonevery autumn.
He loves London, too.

One day, some letter are found by a lady.
These letters written by Shakespaere.
However, they were stolen from Professer Barton's house.
So Marcel and Henry try to get back these letter from thief.
The thief throught them to America.
In the airport, the two mice regain the letters from the thief's bag.
At the end of the day,
Marcel put the letters on the Professer Barton's desk.