My eight-year-old nephew didn’t leave his mother’s casket for the entire wake, repeating over and over: “Don’t close it yet… she told me to wait for the sound.” Everyone thought the boy was just in shock… until, right around midnight, something started vibrating inside the dress they had put on my sister.

At the police precinct, detectives plugged in the flash drive. The video wasn’t long, but it was enough to change absolutely everything. It showed the upstairs hallway of Rachel and Marcus’s suburban house. She appeared walking rapidly toward the stairs with a manila folder in her hand. Marcus caught up to her from behind. You couldn’t hear everything clearly, but you could distinctly make out when he snarled, “You are not leaving me with nothing.”