Miss Masque appeared in America's Best Comics from issue #23 to #31. Like so many other great looking masked super-heroines, her sales went into decline after WW II ended and all the soldiers came home from the battlefield. Also Fred Wertham's Congressional crusade against good girl art put this genre under great public scrutiny and pressure. I always thought she was a great looking heroine, and was delighted when 60 years later a new updated version of her character was published in 2009 by a Canadian publisher (posted elsewhere on this site).
The pics below come from America's Best Comics #28. In this issue she confronts some baddies who hired a fortune teller to predict the death of one of Miss Masque's friends. The woman then dies. Miss Masque investigates the Fortune Teller and finds out the murderers paid the seer to make the prediction. She follows the trail to the bad guy's hideout, gets clobbered from behind, wakes up, tries again, is unsuccessful, is grabbed and held by the baddies, just then a newspaper reporter friend comes into the room and rescues her. Several good pics, including splash page showing her tied to a wheel for a target for a knife throw. Other pics show her KO'd, held helpless, and out cold on the floor.
She was a great looking gal and deserved a much longer run than fate allowed her. Three cheers for her recent revival. Sorry about the microfiche -- it was provided by Golden Age Comics.
Source: Golden Age Comics Download