Contemporary scholarship identifies conspiracy thinking (CT) as a resilient yet contested phenomenon, often linked to populism, polarization, and anti-elitism, and capable of producing both corrosive effects on democratic quality and, at times, forms of critical vigilance toward power. In any case, CT significantly shapes political participation, public deliberation, and the collective orientation toward the common good. This paper examines its implications for democratic theory and practice through the interpretative lens of Catholic Social Teaching (CST), focusing on some of its core normative categories—truth, the common good, and prudence—to address a gap in the literature at the intersection of CST and political theory on conspiracism, introducing a form of comparative conceptual analysis between different conceptual systems. The central hypothesis is that conspiracism affects both the ontological foundations and the deontological commitments of liberal democracy, thereby influencing its capacity to pursue the common good. The study proposes that CST can serve as a coherent analytical framework which could fill the existing gap on this relation, offering a normatively grounded framework for understanding the phenomenon and its political consequences. Drawing on Gospel principles, magisterial documents, the Compendium of the CST, papal encyclicals, Thomistic thought, and interdisciplinary social science research, the project evaluates the impact of CT on democratic health by "reading the signs of the times" through CST. Specifically, the paper aims: (1- see ) to conceptualize CT in light of CST from a multidisciplinary perspective; (2 - judge) to assess its effects on the theory and practice of liberal democracy, particularly institutional legitimacy and civic norms; and (3 - act) to develope interpretative criteria for identifying the phenomenon and its distortions using the CST framework, fostering new ways of conflict management citizens-institutions.