Restless Spirits is a collection of previously unpublished plays by contemporary Assiniboine playwright William S. Yellow Robe Jr. Including one full-length and seven one-act plays, this book reflects one of the author's most creative and productive periods in his career. Selected by Yellow Robe, in consultation with editor Jace Weaver, the plays reveal the range of Yellow Robe's writing from tragedies to farce. They are unified by their supernatural themes or significant elements, including Wood Bones, his most recent and highly successful full-length play. Weaver's introduction says that the works in this collection clearly demonstrate that Yellow Robe is not just a great American Indian playwright, but a great American playwright in the company of David Mamet, Lynn Nottage, and Wallace Shawn. Renowned American Indian playwright Hanay L. Geiogamah provides a foreword and calls this volume "a real gift to the American Indian theater-and to theater, more generally."