The Friendly Creeper Diaries: The Moon City, Book 4: The Underground City
by Mark Mulle
series
genres Childrens
years 2016
Night Things (10) (The Underground Kingdom)
by Steve Elliott
series
genres Other4
years 2013
The Vile (6) (The Underground Kingdom)
by Steve Elliott
series
genres Other7
years 2013
Crystal Thief (1) (The Underground Kingdom)
by Steve Elliott
series
genres Other10
years 2013
Dangerous Desires (2) (The Underground Kingdom)
by Steve Elliott
series
genres Other10
years 2013
Blood Stone (11) (The Underground Kingdom)
by Steve Elliott
series
genres Other10
years 2013
CAGED (Bad Boy Romance): THE UNDERGROUND
by Alexx Andria
series
genres Young Adult
years 2017
INFLAME: (a gargoyle shifter and witch romance) (Underground Encounters Book 8)
by Lisa Carlisle
series
genres Other9
years 2018
CURSED (a gargoyle shifter story): A prequel in the Underground Encounters series
by Carlisle, Lisa
series
genres Other3
years 2019
Tom Swift in the Land of Wonders; Or, The Underground Search for the Idol of Gold
by Victor Appleton
series
genres Science
years 2002
Word Nerd: Dispatches From the Games, Grammar, and Geek Underground
by John D. Williams Jr
series
genres Other8
years 2015
Special Forces: Operation Alpha: Saving Sofia (Kindle Worlds Novella) (The Underground Book 7)
by Becca Jameson
series
genres Other11
years 2016
Tom Swift in the City of Gold; Or, Marvelous Adventures Underground
by Victor Appleton
series
genres Science
years 2003
Chained By Blood (Janine's Story, #3)(Abnormals Underground #7)
by Holly Hook
series
genres Young Adult
years 2018
Smoldering Nights
by Carlisle, Lisa
series Underground Encounters
genres Other4
years 2014
Oaken
by Melody Robinette
series Underground Series
genres Young Adult
years 2015
Assumption
by Aurora Rose Reynolds
series Underground Kings
genres Romance
years 2014
Chasing Rabbits
by ERIN BEDFORD
series Underground
genres Fantasy
years 2016
Chasing Princes
by ERIN BEDFORD
series Underground
genres Fantasy
years 2016
Chasing Shadows
by ERIN BEDFORD
series Underground
genres Fantasy
years 2017