Hennie Scott

Supported avidly by his mother and more reluctantly at first by his father, a working-class Austrian boy joins the Vienna Choirboys, where he proves to be unusually talented.

In the future New York City, the Deputy Commissioner of Police is assisted by a robot detective in solving the murder of a scientist.

An incompetent boarding school headmaster, Professor Jim Edwards, devises a bizarre plot to raise the profile of his boarding school, and thus save his job, by passing off his bookie's son as a Middle Eastern prince. The headmaster's madcap scheme is further complicated when an official from the Foreign Office arrives and announces that a real prince is to be placed under Edwards supervision, not due to the schools lofty reputation, but that a gang of kidnappers are unlikely to look for the regal child there.

Sheffield, England: someone in the steelworks is selling details of a new alloy to a foreign agent. The children lead to his capture with the help of a prize pigeon.

Three children track their lost piano with one note missing through London.