Gregor and the Marks of SecretAudiobook CD - 2008
It's only been a few months since Gregor and Boots returned from the Underland, leaving their mother behind to heal from the plague, yet they all know Gregor must return to fulfill his role as the warrior who is key to the Underlanders' survival.
Publisher: New York, N.Y. : Listening Library, 
Copyright Date: ℗2008
Branch Call Number: COL
Characteristics: 6 sound discs (7 hr., 17 min.) : digital ; 4 3/4 in.