Martin Widmark 's Books
A very well recieved series by Martin Widmark are the books, featuring tropes. The most popular books are The Hotel Mystery #2, The Movie Theater Mystery, The Gold Mystery, The Circus Mystery, The Cafe Mystery, The Diamond Mystery #1, The Mummy Mystery, The Swimming Pool Mystery, which was published in 2022.
The Hotel Mystery #2
The Movie Theater Mystery
The Gold Mystery
The Circus Mystery
The Cafe Mystery
The Diamond Mystery #1
The Mummy Mystery
The Swimming Pool Mystery