It was the early hours of the morning when Prince, a 14-year-old teen from Nigeria who did not want to use his real name, heard three men in Lagos planning how they were going to board a tanker to reach Spain. He watched as they went down to the port and used a canoe to reach the ship. The men then climbed up a small ladder that reached up to a small compartment in the stern that sits above the rudder. He didn’t think twice: he did the same,...