INVISIBLE SCARLET O'NEIL

'Invisible Scarlet O'Neil' is an American comic strip written and drawn by Russel Stamm and published by the Chicago Times, and the name of the protagonist of the strip. It ran from June 3, 1940 to 1956.
It focused on Scarlet O'Neil, a plainclothes superhero (and one of the first superheroines) who had the power of invisibility. Scarlet used this power mostly to help out strangers in need and help the police catch dangerous criminals. She also appeared in comic books, Big Little Books, and a 1943 prose novel.