Joram Heilbronner has not been heard from since checking out of a hotel in Munich two weeks ago. He was due to fly home on Sunday, but has not been located.
15-year-old Thomas Kolding has been missing since Tuesday. Police believe he took two trains to get into New York but don't know what happened from there.
The woman was found walking in Norwood on Tuesday. She told police she did know who she was. The State Police have revealed more information about her.