C. Chenga Reddy and Ors. v. State of A.P. (1996) 10 SCC 193

In a case based on circumstantial evidence, the settled law is that the circumstances from which the conclusion of guilt is drawn should be fully proved and such circumstances must be conclusive in nature. Moreover, all the circumstances should be complete and there should be no gap left in the chain of evidence. Further the proved circumstances must be consistent only with the hypothesis of the guilt of the accused and totally inconsistent with his innocence....