When Basil B. Clark's wife, Cora, was diagnosed with Lewy Body Dementia, their lives changed forever. Unsure how to carry the emotional weight of caregiving, Basil began writing private journal entries to their faithful cat, Little Bit. Those letters became a lifeline, a place to record sleepless nights, frightening hallucinations, difficult medical decisions, heartbreaking losses, unexpected moments of humor, and the unwavering love that remained even as dementia gradually changed the woman he cherished. Descent into Darkness: Lewy Body Dementia is more than a memoir. It is an intimate portrait of one husband's determination to preserve his wife's dignity while navigating the daily realities of Lewy body dementia, one of the most challenging and misunderstood forms of dementia. With additional reflections from Cynthia L. French, the book also offers insight into illness, vulnerability, and caregiving from a woman's perspective, creating a fuller picture of the emotional journey families experience. For spouses, adult children, family caregivers, veterans, healthcare professionals, and anyone walking beside a loved one with dementia, this book offers more than a story, it offers understanding, validation, and the reassurance that no caregiver walks this difficult road alone.