According to European witchcraft beliefs from the medieval through early modern periods, witches—especially those believed to have formed pacts with demonic forces—were thought to cast no shadow or to project visibly distorted, unusually faint, or inconsistent shadows. This visual anomaly was considered an outward manifestation of internal spiritual corruption or loss. Several metaphysical explanations were proposed: the individual’s soul, believed traded or corrupted by the demonic pact, no longer cast a shadow; divine light was thought to shun contact with such beings, preventing normal shadow formation; or the witch’s body was thought to no longer be fully human, thus altering how light interacted with it.
This belief sometimes included conditional triggers: shadow absence might only be visible on consecrated ground, under full moonlight, or during specific magical acts. Communities that suspected individuals of witchcraft would sometimes observe shadow behavior secretly or during ritual settings as an attempt to confirm suspicion. The belief provided a seemingly objective, visual test for an otherwise invisible accusation—offering “evidence” without needing confession or proof.