Actress Mary Tyler Moore says she helped her terminally ill brother try to commit suicide by feeding him ice cream laced with a deadly overdose of drugs. The attempt failed.

Her book, "After All," reveals her role in the suicide attempt of her 47-year-old brother, John Moore. She also describes the role of her husband, Dr. Robert Levine, a cardiologist, in the assisted suicide attempt.

John Moore tried twice to commit suicide to end his suffering from kidney cancer. He died three months later in 1992 of the disease.

Mary Tyler Moore wrote in her book, as reported in Wednesday's New York Daily News: "He called me one day to say goodbye. He had stashed hundreds of painkillers and had tried to end his life by taking enough to kill himself. He fell asleep before he could ingest enough to finally end his pain. He felt he could do it again."

She says she asked her brother, before attempting suicide again, to "wait for me to be with you. I don't want you to be alone."

The next day she flew to California from New York, and, when she got to his home, he swallowed as many pills as he could tolerate, and then "he asked me to mash them into ice cream. …