Crossword puzzle clue "fictional spy who first appeared in call for the dead"

Fictional spy who first appeared in "Call for the Dead"

Spot to spy "Spy vs. Spy"

Fictional young brother-and-sister detectives who first appeared in a 1904 book credited to the pen name Laura Lee Hope: 2 wds.

Fictional character who first appeared in "The House Without a Key"

Fictional young male detectives who first appeared in a 1927 book credited to the pen name Franklin W Dixon: 2 wds.

Fictional sleuth who first appeared in the Saturday Evening Post

Fictional young female detective who first appeared in a 1930 book credited to the pen name Carolyn Keene: 2 wds.

Fictional young female detective who first appeared in a 1948 book by Julie Campbell Tatham: 2 wds.