The Eternal Spring - S3.E3

On a fishing expedition Dr. Finlay makes an unusual 'catch' when he attends to a stranger hurt in a fall. His patient is Anthony Hay, a well-known London actor staying in Tannochbrae to rest, so he says. But there is something about him that arouses Finlay's suspicions. And why is Hay's wife so anxious to keep him away from doctors?