So is this really a lost Houdini biopic? The documentary credits only add to the confusion, calling this a "1928 Bio-Pic 'The Great Houdini' © Ealing Film Studios MCMXCIII." The roman numeral on the copyright is 1993, so that might be the tip-off that this was created just for the doc.
As exciting as the idea of a lost Houdini biopic is, I'm pretty sure this was made for the documentary, and it's probably tagged with the 1928 date because that was the year Ealing was founded. And the documentary does indulge in several other "artist" moments, so....
What do you think?
UPDATE: Looks like the mystery has been solved by an unimpeachable source:
Hi John, I was the actor who played Houdini. It was made specially for the documentary, and that was the only scene we shot, and I've never seen it up until today, so thanks! -Jonny Whiting