It wasn't only the FBI who were puzzled by Osborne. Reverend Erikkson is one of only a few men still alive who was an associate of Osborne's.
"I think he was an agent. My problem is I don't know if he was an agent for the United States or a foreign government."
The Pilgrims' Way Take a journey on one of the South East's most historic routes.
Cornish tea Inside Out goes behind the scenes at Cornwall's tea plantation.
Storm chasers Join the storm chasers in search of Yorkshire's worst weather..