There is much speculation about the question how did Houdini die? There are many versions of his death.
While alive Houdini was known for re-authoring his life in preparation for posterity as well as to help with his current publicity campaigns.
So it makes sense that he would even have anticipated his death. He in fact, after his death, publicized through his wife Bessie with the prior arrangement of her trying to communicate with him from beyond.
There are still well publicized seances every Halloween in which magicians and others attempt to contact Harry Houdini from beyond the grave.