This volume contains an excerpt and two complete stories. The True Master is one of my favorite stories from this author, so I'm somewhat prejudiced in advance of reading the Omnibus. Unmarked takes place at a much later date (centuries) and is set in a boys boarding school. The underlying theme of the stories is inherited power relationships, the effect on individuals of being unable to fit into the established hierarchies, and the wisdom of learning from those below you. Unmarked is, on the surface, a typical boarding school story, complete with fagging and footer (football). The hierarchy of master/slave that was at the core of The True Master is now master/liegeman, but the conflicts remain much the same.

Male/male sex is taken for granted, but handled very discretely, and is focused on hurt/comfort rather than hot man on man action.