Ann Patchett's book "Commonwealth" begins at a christening party for Franny Keating, the baby daughter of a Los Angeles police officer. Bert Cousins, a vague acquaintance of Franny's father, shows up uninvited, seeking to get away from his pregnant wife and three howling children for awhile.
Gin and orange juice mingle, and Bert kisses Franny's mother, Beverly. That kiss sets off an affair, and a chain of events that carries through generations. It triggers the breakup of two families, and the coming together of children and step-parents into another kind of reconstituted family.
This segment aired on August 3, 2017.