The London Connection

The description on the back of the Disney home video release reads: "An exciting adventure begins for a young American government agent after he witnesses the kidnapping of a noted European scientist in London. The only item left behind in this startling incident is a gold ring, inscribed with an address that leads the youth into a massive conspiracy of international proportions. A baffling series of clues and a high-speed boat chase in the Port of London add up to a superlative Disney mystery thriller!"