Michael Noer?s escape movie biopic Papillon is based on author Henri Charrière?s memoirs.
It covers the years he spent living in the South American penal colony of French Guiana...
after being convicted of a murder he denied committing, says Uproxx.com.
During the time he served, before he escaped to Venezuela, Charrière was nicknamed ?Papillon?.
This came from his butterfly tattoo.
Papillon experienced all kinds of horrors which he unflinchingly recounts in his work.