Ahmed Rabbani was freed from Guantanamo Bay recently after serving after being detained by Pakistani authorities and 'sold' to the CIA in September 2002 for $5000.
He insists his case was one of mistaken identity.
Fluent in Arabic, he specialised in guiding visitors from the Middle East -- a factor which contributed to him being misidentified.
While imprisoned in Guantanamo Bay, painting became an obsession for him.
"Through painting I would feel myself outside Guantanamo.
There, painting was everything to me," he said.