"the action of abducting someone and holding them captive."
"Kidnapping, criminal offense consisting of the unlawful taking and carrying away of a person by force or fraud or the unlawful seizure and detention of a person against his will.
The principal motives for kidnapping are to subject the victim to some form of involuntary servitude, to expose him to the commission of some further criminal act against his person, or to obtain ransom for his safe release."
https://www.britannica.com/topic/kidnapping