Mmmm..nope. Don't recognize that quote....
"Who knows what evil lurks in the hearts of men? The Shadow knows!" These words were accompanied by an ominous laugh and a musical theme, Camille Saint-Saëns' Le Rouet d'Omphale ("Omphale's Spinning Wheel", composed in 1872). At the end of each episode, The Shadow reminded listeners, "The weed of crime bears bitter fruit. Crime does not pay.... The Shadow knows!"
Forward to 28:28.