Comprehension of evidentials is incomplete without consideration of their behaviour in interrogative contexts. This paper debates pivotal formal, semantic, and pragmatic features of cross-linguistic variation regarding the use of evidential markers in interrogative clauses. Cross-linguistic data propose that an exclusively speaker-centric view of evidentiality is not sufficient to account for the semantics of information source marking, as in many languages it is typical for evidentials in questions to represent addressee perspective. Comparison of evidentiality and the related phenomenon of egophoricity emphasises how knowledge-based linguistic systems reflect attention to the way knowledge is distributed amid participants in the speech situation.