“Ms Cummings, your uncle is here.” Sasha glowered at the policewoman who came to get her. She had no uncle. Was this a joke? When the policewoman’s face remained stern and looked like there was no room for questioning or arguments, Sasha reluctantly got out of her cell.

She was taken to an interrogation room, and when the door opened, she saw a man who looked as old as her father seated with a glass of water on one side of the table, offering her a small smile when she came in.

The policewoman left her and her “uncle” with a younger policeman in the interrogation room. Sasha had never...