Kidnapping is performed by having one of your NPCs attempt to snatch another character, either a PC or NPC. This is not an easy task. The kidnapper must have high kidnap skills, high loyalty (otherwise he will tend to chicken out) and speak the language of the fief the kidnap is to be attempted in. When choosing the kidnap option, you will be asked which of your NPCs is the kidnapper and then be presented with a list of characters in the fief where the kidnapper is. You choose the victim and make the attempt. Usually you fail and there is a chance you will be found out and reported in the Seasonal Herald.