The experience of having a missing friend or a family can be disturbingly distressing. It is understandable to be troubled especially if you shared a close bond with the person that has disappeared. However, panicking in the face of this ordeal will not help the missing person.
Investigating, searching, and tracking down a missing person is not easy. Because of this, it would be wise to get the help of a professional private investigator as they are typically knowledgeable and experienced on the best avenues to follow when searching for a person who has gone missing.