The Underground: The Young Trib Force Fights Back Posted on July 5, 2018 by wlibrarian The Underground: The Young Trib Force Fights Back by Jerry B. Jenkins and Tim LaHaye Series: Left Behind: The Kids, Book 6 Share this: Click to share on X (Opens in new window) X Click to share on Facebook (Opens in new window) Facebook More Click to email a link to a friend (Opens in new window) Email Like Loading...