Serial killer Charles Sobhraj spent years evading the police by constantly changing his identity.

After stealing millions of dollars from clients and colleagues, Albert Walker flees Canada, taking his teenage daughter with him.

Law enforcement agencies in Great Britain, France and Portugal look for a man who travels throughout Europe killing women on trains.

Investigators spend seven years searching for a human smuggling organization known as "Snakeheads."

Police find a bunker with weapons, terrorist organization names and files on potential kidnap victims after a repair shop explodes in Managua, Nicaragua.

Looking for stolen art, Mireille Ballestrazzi of the French National Police tracks thieves around the world.