This article explores historical narratives in online conspiracy theories. I analyse writings on Freemasonry on three longstanding Finnish websites, exemplifying the use of global conspiracy theories in a local context. I demonstrate how historical conspiracy narratives are constructed while offering empowerment through cognitive reorientation. Building on previous research, the narratives are examined on three levels: the origins of conspirators, their secret religious traditions, and how they construct alternative histories. I argue that, regardless of their writers’ varying focuses and underlying (ir)religious beliefs, conspiratorial histories share certain implicit assumptions about the historical influence and practices of the supranational elite that has, at its core, a religion-like system. In addition, I propose the concept of “deep religion,” derived from the emic concept “deep state,” to acknowledge the role of claims about religious or quasi-religious traditions in conspiracy narratives.