About:
Roger Krevin Leir was an American podiatric surgeon and ufologist best known as an investigator of alleged alien implants. Leir wrote books such as The Aliens and the Scalpel, and appeared on various radio and television shows, including Coast to Coast AM, claiming he had discovered proof of "non-terrestrial experimentation on man".

• Known For
• 
  The Scientific Study of Alien Implants - Part 2
  as
  Self
• 
  The Scientific Study of Alien Implants - Part 1
  as
  Self
• 
  Moment of Contact
  as
  Self (archive footage)
• 
  Watchers 8: Cloak of Secrecy
• 
  Watchers 2: Signs in the Heavens and the Earth
  as
  Himself