I've looked on the web, and found that it was published by "American Eagle" Software in 1983. Strange, I thought it was an "Adventure International" title.
In any case, I remember seeing print ads listing "Masquerade" as being available for a number of platforms, including the Apple II. "Masquerade" was a graphic adventure in which you, as a P.I. attempted to solve a mystery in a small town (and in that town's building's such as a hotel, the "Bijoux" cinema, etc.