The Invisible Woman is an American science fiction comedy film that was released near the end of 1940 by Universal. It is the third Invisible film following The Invisible Man and The Invisible Man Returns, which had been released earlier in the year. It was more of a screwball comedy than other films in the series.
The wealthy lawyer Dick Russell John Howard funds the dotty old inventor Professor Gibbs John Barrymore to create an invisibility device. The first test subject for this machine is Kitty Carroll Virginia Bruce, a department store model who had been fired from her previous job. The machine proves quite successful, and Kitty uses her invisible state to pay back her former sadistic boss, Mr. Growley Charles Lane.While the Professor and the invisible Kitty are off visiting the lodge of the millionaire Russell, the gangster Blackie Cole Oscar Homolka sends in his gang of moronic thugs including Shemp Howard to steal the device. With the machine back at their hideout, however, they cannot get it to work. By now Kitty has returned to visibility, and the thugs are sent in to kidnap her and Gibbs. However, she has learned that some alcohol will restore her to invisibility, and uses this to defeat the gang with help from Russell. ........
Source: Wikipedia