[ShadowMarth]

Mormon, there's a reason they're called "terrorist cells". They form close groups. Finding one would make finding the others simple, because they would live closely, work together constantly, and information leading to them would be all over the first person's home. Let's see, search through his address book, or torture?

Technology is certainly not to that point yet. Lie detectors work reliably only with yes or no questions, and only if the person decides to answer your questions. Not to mention, you can train yourself to pass a lie detector test. Furthermore, when get get brainscanning... that'll raise a whole suite of other issues.