Kelly and Scott are ordered to attend a medical convention in Japan, where it is rumored that a deadly bubonic plague developed by Communist Chinese scientists is about to be unleashed. The agents' task is complicated by the presence of overanxious, novice spy Vicki (Marlyn Mason), whose well-intentioned assistance could spell disaster for all concerned. Also appearing are veteran character actors Albert Salmi as Dr. Curlock and Rex Ingram as Dr. Bingham. Written by Robert Lewin, "Weight of the World" was first telecast on December 1, 1965. ~ Hal Erickson, Rovi