Item from Divergent by Veronica Roth
Candor's tool of justice — an injected serum that makes lying physically impossible, used in public trials where your darkest secrets become everyone's business.
Truth serum is Candor's foundation. Their entire legal system, their social norms, their sense of identity rests on the idea that forced transparency creates justice. Trials are public. Both parties are injected. The community watches and renders judgment based on the unfiltered truth. The serum works on almost everyone — but 'almost' is the key word. Divergent individuals can resist it, maintaining partial or complete control over what they say. This makes truth serum interrogations a covert test for Divergence, which is exactly how Jeanine uses the information Jack Kang provides from his trials. The cruelty of truth serum isn't the truth — it's the audience. Having your secrets pulled out of you in front of strangers isn't justice. It's a performance that happens to use honesty as its medium.
A clear serum administered by injection. The effect is subtle externally — the subject's pupils dilate slightly and their voice takes on a flat, unguarded quality. Internally, the sensation is described as a loosening, as if the mental walls that hold back private thoughts simply dissolve. You know you're speaking truth because you can't stop.
Also known as: Truth Serum