Nude with a Hat

People wearing gas masks kidnap a photojournalist who specializes in erotics and is now investigating the pimp case. The key to solving this abduction is found in a photograph that shows a naked girl in a hat. The face of the girl is not visible, she is taken from the back. You can identify a young woman by a noticeable mole, but she is located in a place that is usually covered with clothes. The journalist’s friends are investigating.