Critics of Devant claim many of the items in his repertoire were elaborated sketches in which the magical element was insufficient to justify the staging. In its day, however, Devant's magic was the talk of London. He was already a top-of-the-bill music hall star when he began sharing the stage with John Neville Maskelyne in 1893. In 1904, the two moved to St George's Hall, and their official business and professional partnership was established soon afterwards. It was to prosper for ten years.