"Please tell us your demands so we can work together to bring my father home safely," says Levinson's son David, seated beside his mother, Christine.
Missing ex-FBI agent in hostage video: 'Help me' →
"We are not part of any government and we are not experts on the region," David Levinson says. "No one can help us but you. Please help us."
Missing ex-FBI agent in hostage video: 'Help me' →
