2Alzheimer's spouses are faced with perhaps the most difficult promise human beings are asked to keep: the marriage vow to love their husband or wife"€"despite the physical and emotional ravages of the disease"€""until death do us part." In this short but powerful book, Mary K. Doyle, author of "Navigating Alzheimer's" directly addresses people like her who are caring for a spouse through a sometimes decades-long experience of the disease.