ellery Quinn's 13 representative works: 1)9 series mysteries of country names-Roman Hat Mystery, French Powder Mystery, Dutch Shoes Mystery, Greek Coffin Mystery, Egyptian Cross Mystery, American Gun Mystery, Siamese Conjunction Mystery, China Oranges Mystery and Spanish Shawl Mystery 2)4 series tragedies.

The representative works of Dashiell Hammett, the founder of the tough guy school of mystery novels: maltese falcon and The Glass Key;