 Sigfried and Tristan treat Mr. Benson s flock of sheep, most of whom are suffering from a severe calcium deficiency but several have been killed by a dog. Sigfried also has to make a late-night all to Harold Ingledew who, in his cups, is something less than efficient. James is still confined to the surgery because of a sore ankle. He meets Roderick Perowne, whose dog has been injured and Peter Marsten whose dog Jack may have gotten involved in a bit of serious mischief. Marsten is devastated when James determines that Jack may be responsible for the sheep attacks.