The victim is fooled or forced to concede and unwittingly or unwillingly helps the villain, who is now free to access somewhere previously off-limits, like the privacy of the hero's home or a treasure vault, acting without restraint in their ploy.
The victim is fooled or forced to concede and unwittingly. The victim unwillingly helps the villain. The villain is now free to access somewhere previously off-limits acting without restraint in their ploy. This is like the privacy of the hero's home. This is like the privacy of a treasure vault.