Why did Dr Armstrong go to the island?

Why did Dr Armstrong go to the island? Dr. Armstrong is driving to the island, having been asked to report on the condition of Mr. Owen’s ailing wife. He is a wealthy and successful medical man, but, as he drives, he reflects on the good luck that enabled his career to survive an incident that happened some years before, when he drank heavily.

Dr. Armstrong is driving to the island, having been asked to report on the condition of Mr. Owen’s ailing wife. He is a wealthy and successful medical man, but, as he drives, he reflects on the good luck that enabled his career to survive an incident that happened some years before, when he drank heavily.