Gary Hampton is a successful man. He has a loving family, and a successful company. On a camping trip gone bad, Gary is mauled by what they think is a bear. He makes a miraculous recovery, only to be seized by the curse of the werewolf at the first full moon. When the truth strikes home, a mysterious stranger appears (later identified as Zecharia) who seems to know all about Gary's condition, and offers him help. The stranger's credentials in the supernatural are clear.
Origin of the Astounding Wolf-Man.