Where can I find - Dr who season 6

Peter apparently became much abstracted over his cigar, but the abstraction was not dr who season 6 very deep, for he was on his feet the moment Watts rose, and was the first to cross the hall into the drawing-room. He took a quick glance round the room, and then crossed to a sofa. Dorothy and-and some one else were sitting on it. Grinnell had only heard that.