How David got the ring?

When David arrives in Spain to retrieve Tankado's effects, he has no idea what he is supposed to bring back. He was only given strict orders to leave nothing behind. While at the morgue, David notices that a ring had been removed from Tankado's finger. When he asks the Spanish officer if Tankado was wearing any jewelry, the officer informs him that a Canadian tourist mentioned something about a ring but the officer did not believe the man's story was true.

David calls Strathmore and tells him about the ring. Strathmore orders David to find the ring, telling him it is a matter of national security. David finds the Canadian tourist, who tells him a German and his female escort took the ring. David locates the German and his escort. The woman tells David that she gave the ring to a young teenage girl in the park. David talks to a boy who knows the girl and he tells David the girl was trying to hock the ring to buy a plane ticket home to Connecticut.

David goes to the airport and retrieves the ring from the girl.