The ISBN of The Spook's Secret is 0-370-32828-0.
The ISBN of Cybele's Secret is 9780330423540.
The ISBN of Secret Windows is 0165006439.
The ISBN of Secret of the Sirens is 0192754602.
The ISBN of "My Secret Garden" by Nancy Friday is 978-1416567011.
The ISBN of The Secret - book - is 978-1582701707.
The ISBN of The Secret in the Old Attic is 0448095211.
The ISBN of The Secret of the Third Watch is 0440977452.
The ISBN of The Secret House of Death is 0090892100.
The ISBN of My Secret Life on the McJob is 0071473653.
The ISBN of The Name of this Book is Secret is 0316113662.
The ISBN of The Secret River is 1-920885-75-7.
The ISBN of The Manticore's Secret is 0-14-400067-9.