Magnificent Obsession

Robert Merrick is resuscitated by a rescue crew after a boating accident. The crew is thus unable to save the life of Dr. Hudson, a physician renowned for his ability to help people, who was having a heart attack at the same time on the other side of the lake. Merrick then decides to devote his life to making up for the doctor's, and becomes a physician himself.
Mrs. Hudson, the widow, moving to Europe after her daughter, Joyce, is married. Merrick progresses in his career, and in the story's climax, gets involved in a railway accident in which Mrs. Hudson suffers serious injury. Merrick is instrumental in her recovery, and Merrick and Mrs. Hudson subsequently marry.