Amy Bloom's third husband, an architect who is diagnosed with Alzheimer's in his sixties and decides to pursue assisted suicide. His story and relationship with Bloom form the central narrative of the memoir.

A Dignitas doctor who conducts interviews with Brian and Bloom, checking Brian's suitability for assisted suicide. He plays a critical role in supporting their decisions with respect and understanding.

Amy Bloom's therapist who becomes a trusted confidant and source of support during Brian's illness and after his passing. He helps Bloom navigate the complexities of the right-to-die process.

Bloom's tarot card reader, who provides guidance and comfort during the unpredictable times surrounding Brian's illness and eventual death. Her readings bring Bloom a sense of peace and grounding.

Brian's mother and Bloom's mother-in-law, who offers emotional support during Brian's illness and after his death. She hosts a second memorial for Brian and shares insights into his earlier life.