My dad smashed my jaw for talking back. Mom laughed, “That’s what you get for being useless.” Dad said, “Maybe now you’ll learn to keep that gutter mouth shut.”I smiled. They had no idea what was coming.

“It’s about time,” Lydia added, sipping her Chardonnay. “She’s almost pleasant when she isn’t whining about her ‘potential.’”

I kept my head down, staring at my plate of plain rice. Let them believe it, I thought. Let them get comfortable in their cruelty.

But while my body was submissive, my mind was a sponge. I began to map the digital footprint of the Thorne family. I watched through the crack of the door as Arthur entered his passwords into his office computer—he was arrogant enough to use the same string of numbers for everything: Kyle’s birthday.

I waited for the moments of carelessness.

One afternoon, Lydia left her smartphone on the patio table to chase after a delivery driver. I didn’t hesitate. I had thirty seconds. I didn’t look at her photos or her social media. I went straight to her Notes app. There it was—a list of “Confidential Contacts” and login credentials for their shared investment accounts. I didn’t have time to copy them, so I used my old laptop’s camera to snap a grainy photo of the screen.