Harry Houdini and his wife Bess performing a signature magic trick, “Metamorphosis” (ca. 1895). Bess was locked inside a trunk after being restrained with ropes and put into a bag. Houdini would then stand on the trunk and hold a curtain up to conceal his entire body. When the curtain was lowered, it was now revealed to be Bess standing atop the box, having changed places instantaneously with Houdini. When the trunk was opened, it now contained Harry Houdini, restrained as Bess had been.