The next day, thirty minutes before his twenty-four hours were up, Greg made a call to the number on the card and cited the code. Within ten minutes, a black limousine with tinted windows arrived at his doorstep. The chauffeur got out and opened the door for him. He saw a pair of legs with turquoise nail polish on the toenails. These didn’t look like they belonged to Livia or Sasha.

Greg tried not to look too nervous or too excited to get in. When he was at the door, the chauffeur stopped him and motioned him to lift up his hand. He complied. The old man then fastened a...