The drive to the laboratory was a blur of high-speed turns and suffocating silence. We didn’t speak. There was nothing left to say that wouldn’t make the air turn to poison. The woman who claimed to be our mother stayed at the house, a weeping monument to a past we were currently trying to outrun. We chose a facility on the other side of the city, a high-end private lab with a reputation for absolute discretion and precision. I needed to know. I needed a piece of paper to tell me that the ...