"The Secret Panel (original text)"@en . . . . "212"^^ . "Book"@en . . . "The Secret Panel"@en . . . . . . . . . "1946"^^ . . . "__WIKIA_BANNER__ The Secret Panel is the 25th book in The Hardy Boys series. It was first published in 1946 by Grosset & Dunlap."@en . . "__WIKIA_BANNER__ The Secret Panel is the 25th book in The Hardy Boys series. It was first published in 1946 by Grosset & Dunlap."@en . . .