After the ship carrying him returned to the mainland, Wu was locked up in Cagerock prison, considered the safest in the world. No one had ever escaped from there. He was kept in constant isolation, except for interrogation. Nobody could see him, not even family members.
But money could buy anything, and John Hammond knew this well. After releasing some bribes he had received permission to be able to carry out an interview with the prisoner. The prison director had chosen to go along with him, obviously on the condition that no word was made of that exception to the rule.