A 2006 biography, ''The Secret Life of Houdini,'' raised the issue again and convinced some that he might have been poisoned, including [Houdini’s great-grandsonnephew] George Hardeen, who lives in Arizona and is the chief spokesman for the president of the Navajo Nation. (Italics mine)

The exhumation plan received support from a surprising source: Anna Thurlow, the great-granddaughter of "medium" Margery, whose husband Dr. Le Roi Crandon was one of the Spiritualist movement's biggest proponents -- and one of Houdini's most virulent enemies.

During a 1924 seance, Margery "channeled" a "spirit" named Walter who greeted Houdini with a threat: "I put a curse on you now that will follow you every day for the rest of your short life."

The prediction of a short life was all too real, and Thurlow believes there may be a connection.

"With people that delusional, you have to question what they're capable of,"' she said. "If there's any circumstantial evidence that Houdini was poisoned, we have to explore that."