Conversation so far:
What year did Harry Houdini do the buried alive stunt?
Harry Houdini performed at least three variations on a buried alive stunt. The first was near Santa Ana, California in 1915, and it almost cost Houdini his life.
How did Harry Houdini almost die?
Harry Houdini was buried in a pit of earth six feet deep. He became exhausted and panicked while trying to dig his way to the surface.

Question: Who came to help him?
Self-contained rewrite: Who came to help Harry Houdini during his buried alive stunt?