Have a look at this page. Download free audio books from Books Should Be Free and have your students listen to them and solve mysteries on the go:

“Listen to the following section of the book and find out who broke the window glassw ith a stone”, for example… or “Listen to this excerpt and write down the names of the two main characters of the story”.

They can also read the text as they listen (there’s always a link to the written version).

Many different books to choose, I’m sure you’ll find one for your students!