The Hidden Children

Hidden Staircase (Nancy Drew, No. 2)

How to Spot Hidden Alcoholics: Using Behavioral Clues to Recognize Addiction in Its Early Stages

The Secret of the Old Clock/the Hidden Staircase (Nancy Drew Back to Back Mysteries, 2 Books in 1)

Mandie and the Hidden Treasure (Leppard, Lois Gladys. Mandie Book, 9.)

Hidden Order of Art: A Study in the Psychology of Artistic Imagination

Hidden Symbolism of Alchemy and the Occult Arts.

Secret Dossier: The Hidden Agenda Behind the Gulf War

The Lives of Beryl Markham: Out of Africa's Hidden Free Spirit and Denys Finch Hatton's Last Great Love

The Hidden Life Of Dogs