Louise Brooks, especially imported for the title role, does not pan out, due to no fault of hers. She is quite unsuited to the vamp type which was called for by the play from which the picture was made.
Give all due credit to Pabst, but Brooks pretty much single-handedly raises Pandora's Box above being just another doomed-bad-girl melodrama.... She makes Lulu unfathomable, a well that always has more to give. Therefore, so is the film.
2006 is the centennial of actress Louise Brooks, and to honor it, her greatest film, Pandora's Box, is being released in a new 35-mm print in New York's Film Forum before being taken around the country.