Emanuelle and the White Slave Trade (1978)

Original title: La via della prostituzione

While attempting to interview an elusive gangster, photojournalist Emanuelle notices a man pushing a girl in a wheelchair through the airport. Later, in another country she sees the same man and the girl up and walking. Intrigued, she does a bit of investigating and uncovers an organization dealing in the buying and selling of young women. She goes undercover into the organization but finds that getting out again could cost her her career...and her life.