Harvey Braban

Sherlock Holmes (Eille Norwood) is on vacation when he stumbles into a house and discovers two bodies. Both have been dead for hours but there aren't any visible signs of violence and soon other bodies start to pile up. (imdb)

Vaudevillian Gene Gerrard stars as George, a young man on a yacht moored off Monte Carlo who has a tiff with his fiancée, goes ashore on a glorious binge, then finds himself accused of assaulting a prince! When he attempts to extricate himself by pretending to be his non-existent twin brother, he finds he's really in trouble...