Description: Dr. Marcus Welby, a general practitioner, and Steven Kiley, Welby's young assistant. The two try to treat people as individuals in an age of specialized medicine and indifferent physicians. The catch with this particular program was that the roles were reversed in that Kiley was much younger than Welby. The opening credits of each episode reminded viewers of the generation gap between the two doctors, Welby driving his sedan and Kiley riding a motorcycle.