Joan Tabor

John King, the two-fisted, globe-trotting chief of security for the world's diamond industry, travels the world battling jewel thieves and gem smugglers. Assisted by his young protégé, Casey O'Brien, King matches wits with the criminal gang that calls itself the Illegal Diamond Buyers' Syndicate.

A teenager whose father is a millionaire radio station owner secretly records a song and plays it on one of his father's stations. It becomes a hit. Then he falls in love with a girl who works at a local radio station who doesn't know who he is. (imdb)