The passengers on the plane were a 'captive audience'. [=the passengers on the plane could not leave and had to listen to what was being said]
Enemy forces took/held them 'captive'. [=took or kept them as prisoners]
The 'captive' soldiers planned their escape.
(..) how you treat a friend? No, no, you puttock. This is how I treat a friend. She's pretty. And who is this? Is it apprentice, or captive? - This man is helping me. - We should kill them both. He's caused us nothing but trouble. Skewer him and leave him to rot. I don't like killing girls. (..)2012 Snow White and the Huntsman