The Hardy Boys

The Disappearing Floor by Franklin W. Dixon

The Disappearing Floor

The Hardy Boys #19

Franklin W. Dixon

176 pages • first pub 1940 (editions)

fiction middle grade mystery adventurous mysterious tense fast-paced
Mystery of the Flying Express by George Wilson, Franklin W. Dixon

Mystery of the Flying Express

The Hardy Boys #20

George Wilson, Franklin W. Dixon

177 pages • first pub 1941 (editions)

fiction middle grade mystery mysterious fast-paced
The Clue of the Broken Blade by Franklin W. Dixon

The Clue of the Broken Blade

The Hardy Boys #21

Franklin W. Dixon

192 pages • first pub 1942 (editions)

fiction middle grade mystery lighthearted mysterious fast-paced
The Flickering Torch Mystery by Franklin W. Dixon

The Flickering Torch Mystery

The Hardy Boys #22

Franklin W. Dixon

missing page info • first pub 1943 (editions)

fiction middle grade mystery adventurous lighthearted mysterious slow-paced
The Melted Coins by Franklin W. Dixon

The Melted Coins

The Hardy Boys #23

Franklin W. Dixon

180 pages • first pub 1944 (editions)

fiction middle grade mystery adventurous mysterious tense fast-paced
The Short-Wave Mystery by Franklin W. Dixon

The Short-Wave Mystery

The Hardy Boys #24

Franklin W. Dixon

192 pages • first pub 1945 (editions)

fiction middle grade mystery adventurous mysterious fast-paced
The Secret Panel by Franklin W. Dixon

The Secret Panel

The Hardy Boys #25

Franklin W. Dixon

178 pages • first pub 1946 (editions)

fiction middle grade mystery lighthearted mysterious fast-paced
The Phantom Freighter by George Wilson, Franklin W. Dixon

The Phantom Freighter

The Hardy Boys #26

George Wilson, Franklin W. Dixon

181 pages • first pub 1947 (editions)

fiction middle grade mystery mysterious fast-paced
The Secret of Skull Mountain by Franklin W. Dixon

The Secret of Skull Mountain

The Hardy Boys #27

Franklin W. Dixon

192 pages • first pub 1948 (editions)

fiction middle grade mystery adventurous mysterious fast-paced
The Sign of the Crooked Arrow by Franklin W. Dixon

The Sign of the Crooked Arrow

The Hardy Boys #28

Franklin W. Dixon

160 pages • first pub 1949 (editions)

fiction middle grade mystery mysterious fast-paced