I saw this film when it came out on British TV in the 1990s and it's remained embedded in my memory ever since. All young Hollywood directors should be contractually obliged to see "Captives" to see what real on-screen chemistry is like: the heat and intensity generated between leads Tim Roth and Julia Ormond just isn't something you see in every modern film, so much so that there were moments when I almost wanted to look away, embarrassed for their intimacy and urgency, shout "get a room!" ah, but there's the rub they can't. He's in prison; she's the visiting prison dentist, and they're caught in an impossible position that there's no easy escape from.
Others here have described the story well, so I won't cover that ground again. But it's exactly the kind of "little" British film I love to watch: when they're good, you're rewarded with an unusually good cast, a decent script and a neat premise that draws you in and grips you. The slightly unconvincing conclusion doesn't detract from how very enjoyable and stirring this film is.
"Captives" illustrates why Tim Roth deserved his reputation as an actor; but I'm sorry not to have seen more of Julia Ormond on screen since the 90s. Is it that she's in that twilight zone of female actresses, who suffer from the lack of good parts for women who don't look twenty years younger than their age?