From publisher blurb: A desperate mission sends the rangers deep into the trackless desert north of Alladore. Somewhere in that wasteland is a hidden entrance to the Shadow Deep, an entrance that could prove the only chance for a daring rescue… This book is the first of three that together make up a single mission called ‘The Rescue’. It includes 4 new scenarios designed for rangers of level 10 and above, as well as a pair of unique companions, and a host of fearsome new monsters. The book also includes a section on Advanced Herbalism that greatly increases the number of herbs that are available to rangers and gives new rules for using them and searching for them during missions.