According to the AFI web site, this film was shot in early 1918 in the Bronx studio of Thomas A. Edison, Inc. to be released as a Perfection picture. While in production, the film was entitled Aliens, Weavers of Dreams, The Heart of Kiku-San, and The Wall Invisible. This was one of the last productions of the Edison company, and was not released until World Film Corp. distributed it in 1919.