unconscious with grievous injuries on her head. In such case, the appellant has to explain how Parvati sustained injuries and died. In this connection, we may refer to Section 106 of the Evidence Act. Section 106 of the Evidence Act provides that when any fact is especially within the knowledge of any person, the burden of proving that fact is upon him. In several recent decisions, the Supreme Court has held that the principles which underlie Section 106 of the Evidence Act can be applied when certain facts are especially within the knowledge of a person. In the State of Rajasthan Vs. Kashi Ram (2006) 12 SCC 254: (AIR 2007 SC 144), the Supreme Court has observed that if the accused fails to offer an explanation on the basis of facts within his special knowledge, he fails to discharge the burden cast upon him by Section 106 of the Evidence Act. In a case resting on circumstantial evidence if the accused fails to offer a reasonable explanation in discharge of the burden placed on him, that itself provides an additional link in the chain of circumstances proved against him. Section 106 does not shift the burden of proof in a criminal trial, which is always upon the prosecution. It lays down the rule that when the accused does not throw any light upon facts which are specially within his knowledge and which could not support any theory or hypothesis compatible with