Stanley LeFevre Krebs
(January 14, 1864 - September 26, 1935)
Stanley LeFevre Krebs was an American psychologist and fraudulent medium exposer. In 1889, he received a Doctor of Psychology degree from the Chicago School of Psychology. He married the actress Marjorie Main.
He exposed fraudulent mediums with the use of a secret mirror, such as Henry Slade, whom he saw swapping slates and hiding them in the back of his chair, and the Bangs Sisters who were caught tampering with a sealed envelope.