What happens to faith when Christians get dementia? Here, the unique voices of Christians who live with this illness bring insight and prompt theological reflection on the profound questions that dementia asks of faith. Within the boundaries of a biblical agenda, these questions are explored using a model of orientation, disorientation, and reorientation (reminiscent of Brueggemann's scheme), to seek deeper understanding of faith experience and practice. Arising from the research, fresh theological insights and challenges for the church call for new, creative practices to enable the faith nurture of disciples of Jesus living with this disease. Counterintuitively, the study reveals a growing, positive experience of faith in the light of dementia highlighting the significance of Christian hope. Faith does not end with diagnosis of this illness.