Helen Ulvinen was convicted of first-degree murder for the killing of Carol Hoffman by Helen's son David Hoffman. David strangled and dismembered his wife Carol. He called his mother Helen to watch the children while he disposed of Carol's body. The Minnesota Supreme Court reversed Helen's conviction. There was no evidence that Helen influenced David's decision to kill his wife. As David's parent, Helen was insulated by statute from guilt as an accomplice after the fact for her conduct. The evidence at best showed that Helen passively acquiesced to David's plan, which is not a criminal offense under Minnesota law.