A scheming musician seduces a wealthy woman for love and money.

A group of strangers find themselves aboard an unmanned ship, surrounded by fog and uncertain of their destination. As they attempt to make sense of their situation, the group of passengers discover a commonality that changes their perception of the nature of their journey. The film was later remade, with some changes, as Between Two Worlds (1944).

Criminologist Carter Holmes travels the globe trying to recover and keep safe the 9 daggers which will unlock a secret vault containing the Devil's Trademark, an ancient relic with massive power.
The relic was uncovered from an Egyptian temple and relocated to the vault by scientist Dr. Stanhope. Stanhope is murdered as various nefarious parties compete to get the daggers first - sometimes working together, sometimes helping Carter.Stanhope's daughter Ruth (also Carter's girlfriend) is constantly being kidnapped as a bargaining chip, as well for sex slavery and human sacrifice, by Devil worshippers,a Turkish sheik, the masked Monsieur X, a few lesser criminals, and the supernatural Asian Dr. Wang Foo who plans on world dominion.

A crippled puppeteer rescues an abused young boy and turns the boy into a great ballet dancer. Complications ensue when, as a young man, the dancer falls in love with a young woman the puppeteer is also in love with.