It fascinating to see Houdini promoting his film company at this particular time. The company had been formed in February 1921 with a $500,000 capitalization and a plan to produce four movies a year. But by November 1923, when this ad appeared in Moving Picture World, the HPC had only made two films and had vacated its offices in the Candler Building on 42nd Street and was now located inside Houdini's home.
Perhaps after making his distribution deal with Film Booking Offices of America, Houdini thought there might be life in his film business after all. This ad certainly seems to point to a new future. Notice how it says that "Houdini Productions" (plural) are distributed by FBO. Also remember this post about Houdini planning a film version of Miracle Mongers and Their Methods.
However, Haldane of the Secret Service would be the only Houdini Picture distributed by FBO (which would be folded into the new RKO in 1928), and this marked the last stand for the Houdini Picture Corporation. The HPC remained one of Houdini's several dormant companies until his death. In December 1936 the state of New York dissolved the corporation for failing to pay its franchise taxes.
Interestingly, the Houdini Picture Corporation did live again. In 1996 Geno Munari of Houdini's Magic Shop and collector Sid Radner revived the company name with plans to produced magic instructional videos. I'm not sure where the company stands today, but I love the logo!