One of the earliest of over 700 "Paramount" productions, filmed between 1929 and 1949, which were sold to "MCA/Universal" in 1958 for television distribution, and have been owned and controlled by "Universal" ever since. However, because of legal complications, this particular title was not included in the original television package and may not have ever been televised.
The title was changed from "The Insidious Dr. Fu Manchu." Some advertising material carries the original title.