Mrs. Laval was a patient of Dr. Leopold, a practicing psychiatrist. Dr. Leopold shared an office with two associates practicing in the same field. No receptionist or other employee attended the office. Mrs. Laval placed her coat in the clothes closet in the office reception room. Later, when she returned to retrieve the coat to leave, she found it missing. Is Dr. Leopold liable to Mrs. Laval for the value of her coat? Explain.