Doyle, Arthur Conan <br/><br/>
The sign of four / 
Arthur Conan Doyle 
 - London  Scholastic  2019 
 - 167 p.  20 cm. 
<br/><br/><label>ISBN: </label>9781407193250 
<br/><br/><label>Subjects--Topical Terms: </label><br/> Sherlock Holmes. Private investigations. Detective and mystery stories. --Fiction
<br/><br/><label>Index Terms--Genre/Form: </label><br/>Mystery.