'A', the only son of 'B' and a coparcener in a Joint Hindu Family governed by Mitakshara Law, murders…

A murderer is disqualified under Section 25 of the Hindu Succession Act, 1956 and, by Section 27, is treated as if he had predeceased the intestate; A being deemed predeceased, "A's wife" as the widow of a predeceased son (a Class I heir) succeeds to B's property, though the rival no-fresh-stock-of-descent view is debated.