Laughing at Death

Laughing at Death was a 1929 thriller directed by Wallace Fox for Film Booking Offices of America. The script was written by Frank Howard Clark and Helen Gregg, and the film starred Bob Steele and Natalie Joyce.
Plot.
A young American college athlete meets the prince of a European country while spending time on an ocean liner over his summer vacation. The two look practically identical, and he agrees to help the price escape a plot against him by switching places for a period of time. Trouble ensues.