Conspiracy theories are not just outlandish ideas. They can also be political weapons.Conspiracy theories have come to play an increasingly prominent role in political systems around the world. In Revealing Schemes, Scott Radnitz moves beyond psychological explanations for why people believe conspiracy theories to explore the politics surrounding them and places two questions at thecenter of his account: What leads regimes to promote conspiracy claims? And what are their effects? Using a new database of over 1,500 conspiracy claims collected from 12 post-Soviet states - a region of the world where such theories have long thrived-he shows that purveyors of conspiracy tend toenter the fray in moments of uncertainty and chaos. Conspiracy claims flow most freely where there is serious political competition rather than unbridled autocracy; and in response to destabilizing events that challenge a regime's ability to continue ruling. Leaders who anticipate future challengescan disseminate conspiracy narratives proactively as an insurance policy. But if conspiracy becomes overused, it can also backfire. Radnitz shows that individuals who are exposed to a greater amount of intrigue are more cynical and generally more conspiratorial. Yet, conspiracists are alsosuspicious of the motives of authority figures who tout conspiratorial ideas. The upshot is that conspiracism as a political strategy may become less effective over time. At a time of heightened distrust in democratic institutions and rising populism, understanding how conspiracy theories are usedin a region where democracy came late-or never arrived - can be instructive for concerned citizens everywhere.