Seven Keys to Baldpate: Mysterious Thriller in a Closed Mountain Hotel

The Agony Column (Serapis Classics)

CHARLIE CHAN MYSTERIES – Complete Series: 6 Detective Novels in One Volume

The Greatest Mysteries of Earl Derr Biggers – 11 Titles in One Volume (Illustrated Edition): Charlie Chan Books, Seven Keys to Baldpate, Inside the Lines, The Agony Column...

Behind That Curtain

The Best Thriller Novels of Earl Derr Biggers

Seven Keys to Baldpate: Murder Mystery Novel

MYSTERY CLASSICS Boxed Set - Earl Derr Biggers Edition (Illustrated)

Seven Keys to Baldpate

The Chinese Parrot

The Agony Column (The Second Floor Mystery)

Love Insurance

Seven Keys to Baldpate

The Black Camel: An Exotic Murder Mystery in Paradise

Keeper of the Keys: Unraveling a Murder Mystery in San Francisco: A Classic Tale of Intrigue and Suspense

The Ebony Stick: Intrigue and Deception in 1920s Honolulu: Unraveling the Mystery

Seven Keys to Baldpate

Behind That Curtain

The House Without a Key: Murder, Mystery, and Aloha: A Detective's Journey in Exotic Hawaii