The House Without a Key is a novel

Novel

A novel is a book of long narrative in literary prose. The genre has historical roots both in the fields of the medieval and early modern romance and in the tradition of the novella. The latter supplied the present generic term in the late 18th century....

 that was written in 1925 by Earl Derr Biggers

Earl Derr Biggers

Earl Derr Biggers was an American novelist and playwright. He is remembered primarily for adaptations of his novels, especially those featuring the Chinese-American detective Charlie Chan.-Biography:...

. It is the first of the Charlie Chan

Charlie Chan

Charlie Chan is a fictional Chinese-American detective created by Earl Derr Biggers in 1919. Loosely based on Honolulu detective Chang Apana, Biggers conceived of the benevolent and heroic Chan as an alternative to Yellow Peril stereotypes, such as villains like Fu Manchu...

 mysteries

Mystery fiction

Mystery fiction is a loosely-defined term.1.It is often used as a synonym for detective fiction or crime fiction— in other words a novel or short story in which a detective investigates and solves a crime mystery. Sometimes mystery books are nonfiction...

 written by Biggers.

The novel, which takes place in 1920s Hawaii

Hawaii

Hawaii is the newest of the 50 U.S. states , and is the only U.S. state made up entirely of islands. It is the northernmost island group in Polynesia, occupying most of an archipelago in the central Pacific Ocean, southwest of the continental United States, southeast of Japan, and northeast of...

, spends time acquainting the reader with the look and feel of the islands of that era from the standpoint of both white and non-white inhabitants, and describes social class structures and customs which have largely vanished in the 21st century.
The novel deals with the murder of a former member of Boston

Boston

Boston is the capital of and largest city in Massachusetts, and is one of the oldest cities in the United States. The largest city in New England, Boston is regarded as the unofficial "Capital of New England" for its economic and cultural impact on the entire New England region. The city proper had...

 society who has lived in Hawaii for a number of years.