A rich man bequeaths seven keys to seven of his friends, but only one will unlock the door to untold wealth.

Jeff Clayton, who has already won $5,000 at poker when the game’s big loser returns, asking for one last hand.
This time, the stranger will wager his portion of a ranch. He loses, tries to gun down Clayton in despair, and loses again, winding up dead on the floor of the saloon.

A masked killer is stalking and killing Londoners outside a nightclub.

1953 West German film by Kurt Hoffmann

Sherlock Holmes and Dr. Watson embark on a search for Cleopatra's ancient necklace, which has been stolen.

Dr. Karl Sternau, the personal physician of the count Bismarck, who spent much of his youth in Mexico, is sent back to that country during the occupation by French troops in the service of the Austrian 'Emperor' Maximilian, to carry an encouraging letter from U.S. President Lincoln to the nationalist Mexican president Benito Juarez.

After the mysterious crash of a millionaire's private plane, scientists secretly harvest the dying man's brain and keep it alive in a laboratory in order to communicate via telepathy.