Linda and Jim Dulin are convinced that their daughter, Kari, was murdered by the man they once embraced as a son-in-law: Baptist preacher Matt Baker. "Kari was a very good minister's wife. Faith was very important in her life," Linda tells "48 Hours Mystery" correspondent Erin Moriarty. "This was a man who was capable of the ultimate evil." Matt has always claimed that his wife committed suicide, just as he told the 911 operator a little after midnight on April 8, 2006.