Studies in Light

Duncan, Tessa, and Richie attend a photographic exhibit featuring Immortal Gregor, and Duncan discovers that the other exhibitor is someone he loved decades earlier, who had sent him away in order to focus on her work. She recognizes him, but he doesn't know how to tell her that he is the same man she loved. Meanwhile, Gregor appears to have changed since Duncan knew him, as he appears to have become disillusioned and can no longer feel emotion.