Torture & Sexual Repression
How the Torture of Witches Revealed the Sexual Repression of Inquisitors
Interrogations of witches followed many standard Inquisition procedures, but with some added bonuses. Accused witches were all stripped naked, had all of their body hair shaved of, and then "pricked." The sexually neurotic Malleus Maleficarum had become the standard text on how to deal with witches, and this book stated authoritatively that all witches bore a numb "devil's mark" which could be detected by sharp prodding.
When people are tortured, and especially when the torture involves sexual abuse, it doesn't take long for the victim's world to become reduced to nothing but the pain and a desire for the pain to end. When the only important thing is the cessation of pain, the victim will tell the torturer whatever they want to hear. It may not be the truth, but if the pain ends that's all that matters.