...described as the "common carrier" or "non-delegable duty" exception to respondeat superior. The trial court and the Court of Appeals found that neither theory had sufficient merit to escape summary...nature of its business, Heritage assumed a non-delegable duty akin to that imposed on common carriers to care for and protect him, thus subjecting itself to that extraordinary standard of care which...Rabon v. Guardsmark, Inc., 571 F.2d 1277 (4th Cir. 1978), for its discussion of non-delegable duties and the common carrier exception to the doctrine of respondeat superior. The Fourth Circuit quoted extensively from the Restatement (Second) of Agency and Prosser, and the key concepts may be summarized as follows: First, once one has, by contract or otherwise, assumed the duty to...