In her quest to let go of her aging father, Lornie Walker, a suicide survivor, breaks society's taboo regarding suicide and sifts through years of guilt surrounding the death of her sister.  In Argyle Park, the author delves into the childhood relationships the two sisters had on the street where they grew up.  Raised with two children adopted from birth, Walker offers a poignant account of her journey as the only biological child of the family.

Arglye Park also offers an honest look at the difficulties of coping with aging parents.  Anticipating her long-distance move, Walker begins to face the emotionally frozen man her father has become.  A week-long visit with Walker's father coincides with the anniversary of her sister's suicide, generating flash backs to the year 1968 through 1977 and the tumultuous experiences that happened in these sister's lives, including Vietnam protests and drug problems. 

Drawing upon the spirituality instilled by her mother and her own inner strength, Walker discovers healthy ways to move beyond her struggles.