Young Indiana Jones and the Secret City

Young Indiana Jones and the Secret City is the fourth young adult novel in the series from Random House, and the second by author Les Martin. It was released in 1990.

Publisher's summary
''A visit to Turkey seems like fun. But that's before young Indiana Jones falls into the clutches of power-hungry fanatics!''

''Why are they living in an underground city? And what's so special about that ancient knife they own? Indy had better think fast&mdash;real fast&mdash;if he wants to save his skin!''

Characters

 * Henry Jones, Sr.
 * Indiana Jones
 * Herman Mueller
 * Igor Ivanovich Stravsky
 * King Zed

Artifacts

 * Knife of Cain

Locations

 * Constantinople, Turkey