Die Koenigen einer Nacht was based on a novel by Alfred Machard. The title translates as Queen of a Night, which is the lofty status thrust upon heroine Friedl Haerlin. Despite the fact that she is not in the least bit queenly, Haerlin manages to convince her fans that she is indeed a beautiful regent, forced into a marriage of convenience which unexpectedly blossoms into love. That superlative singer Walter Janssen shows up in a supporting role designed to allow him full scope to display his remarkable vocal skills. The best acting performance in Die Koenigen einer Nacht is rendered by Carl Ludwig Diehl as the queen's adjutant. ~ Hal Erickson, Rovi