I DNA tested my granddaughters because something deep in my blood screamed that my son wasn’t their father. I thought I was going to unmask my daughter-in-law, but the result ended up pointing to someone much closer. The envelope arrived on a Tuesday, while I was warming tortillas on the griddle. My son, Matthew, was smiling at me from a photo on the wall. And when I read the first line, I felt my entire house coming down on me.

We didn’t sleep that night. Matthew sat in the living room, staring at a photo of him holding Alexis when she was a newborn. Brenda locked herself in the bedroom. I went to pick up the girls from school and bought them ice cream so they wouldn’t notice my face.