Batman Detective Comics #21

Batman Detective Comics #21 – I enjoyed this issue.  It was interesting that the creative team decided to bring back the woman from the issue zero story.  Once again a super hero is menaced by someone from their past who they thought was dead and now has super mystical ninja powers and they are an assassin.  Mio now calls herself Penumbra and she has shadow ninja powers.  Unfortunately for her those powers can apparently be counteracting by bright lights.  A light provided by Harper whom appears to be another potential Robin.  The backup story was another Man-Bat story and it was a good story and with luck this backup story will lead to something but if not at least it is a good backup story.