There's torture and then there's pressure. Pain vs. discomfort. While torture plays well on shows like "24", the situations depicted in such a show are so far from how actual events play out that they may as well be discounted immediately.
If you capture someone(s) suspected in nefarious ends(guilt by association), you may not know the details or even the existence of a plot in play. You begin by basic questioning techniques, good cop/bad cop, honey/stick (pick an analogy you like). You're unlikely to want to ramp-up the pressure unless something comes up that raises a flag. As far as you know..there's no deadline...and therefore, no need to push the speed at which you gain the information. No need for torture at all.
You'll get better results from helping the target get his family safe, give him money/immunity/reduced sentence/release for turning on his pals, than any other method you care to devise. Turn him into a willing ally and you'll get 100% or a close facsimile thereof. If you assume that he knows more than he's telling, and you assume that it's time-sensitive..you're assuming an awful lot to condone torture.
A twist on this is someone you've captured, who is stupid enough to have given you some information about a plot (through the first method) and then promptly shuts up before giving you enough details to stop the plot. You have to break through the wall the person put up to get the last information. Bring out the gimp…time to go medieval on his ass. Problem: Any information gained through torture is suspect...people will say anything you want to hear to stop the pain. This gem of a find (someone who reveals a time-sensitive plot you didn’t know about) is indeed rare…so rare you’re unlikely to ever run into such a chance unless you’re sitting in a movie theatre.
The 'time is of the essence' scenario loved by movies/television/dramatic novels means that you already know the details of the plot. and most likely the players as well. If you know the details enough to have captured someone involved, you don't need to use torture...why bother? At best, you'll get a few more details which may not even aid you in stopping the plot. That you know a plot is in play means that you already have enough information to stop it.
The only argument left for using torture is to punish the perp or to get your jollies..both equally despicable, illegal and inexcusable.