inconsistency in (someone's) story

Translations
несоответствие в (чьей-то) истории
The detective noticed an inconsistency in her story.
Детектив заметил несоответствие в её истории.
Definitions
A lack of uniformity or coherence in the details or elements of a person's narrative, leading to contradictions or discrepancies that may raise doubts about its truthfulness or reliability.