Evidentiality in Udmurt presents the first in depth exploration of how this endangered Uralic language encodes information source, mirativity, and epistemic modality through its past tense morphology. Grounded in field data and typological comparison, the book offers a detailed portrait of the Udmurt evidential system and its contextual–pragmatic extensions. Udmurt emerges as a key case for understanding the dynamics of small evidential systems built around an evidentially neutral form and a marked counterpart. The findings contribute to typological research on the interaction of evidential, modal, and pragmatic categories in small evidential systems, many of which are found across the Volga–Kama region and Northern Eurasia.