Abstract: A magician's guillotine has generally transparent stocks providing a primary, central neck receiving aperture and surrounding upper, lower and lateral demonstration apertures for demo articles to be severed. Opposite edges of the stocks are mounted in frame uprights having first and second vertical tracks for receiving an upper blade assembly which is switched to descend in a first track to extend across and sever demo articles in upper, lateral and primary apertures and in a second track to extend across and sever only articles in the upper and lateral demonstration apertures. When the blade assembly descends in the second track a lower blade rises from a concealed position inside the frame to sever a demo article in the lower aperture. The upper blade assembly has a first blade of inverted U-shape concealed within a second, rectangular tubular blade when in the first track and sliding therefrom when in the second track to sever only demo articles in the upper and lateral apertures.