Disappointingly, this is not the full original text. It's been trimmed down by almost half, and then padded out with other articles Houdini wrote.
Still, what's left behind is fascinating. Lots of great stories of scams and burglary, from using chewing gum to steal jewels to having a confederate hide in a checked trunk in order to steal from a "locked" luggage compartment. Many good story ideas buried in here.
You can see why Houdini was so fascinated by the techniques of thieves and con-men. So much of their work involved mis-direction and slight of hand, the same techniques he used as a magician.
You can also understand why he went after mediums and psychics so hard: They were using those same techniques of magic, but not presenting themselves as magicians.
Thus they were not only defrauding the public, but casting legitimate magicians like himself in a bad light. Because they were frauds, and so when they were discovered -- which they almost inevitably were -- they made reputable magicians like himself look like frauds, too. Better that he unmask them, to make the difference more distinct.
So, a good book, still, though far too short. I'll have to track down a complete version at some point.