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On vacation in St. Moritz, Bob and Jill Lawrence and their daughter Betty befriend a foreigner staying in their hotel.  One evening as Jill dances with the man, he is shot through the window.

As he dies, he begs Jill to retrieve a note from his room and deliver it to the British consul.  Before Bob can fulfill the man's wish, he is handed a note by Betty's kidnappers.

The couple returns to England and learns that the kidnappers plan to assassinate a powerful foreign visitor at Albert Hall.  Jill attends the concert and distracts the gunman with a scream.  The assassins are captured by the police, and Betty is returned to her parents.