A Canadian jury found an Afghan father, Mohammad Shafia, and one co-wife quilty as cold-blooded, shameful murderers resulting from a twisted concept of honor -- of killing three teenage daughters and a second co-wife in a polygamous marriage... his co - wife Tooba Yahya, 42; and their son Hamed, 21, each guilty of four counts of first-degree murder in a case that shocked and riveted Canadians from coast to coast....