In a city that “knows how to keep its secrets”, Guy Noir, Private Eye has been voiced by a most enigmatic man. Whilst being part of our NPR weekend listening since 1974, humorist and commentator Garrison Keillor with his radio show “Prairie Home Companion” has kept a low personal profile amongst his wide variety of impersonations. Peter Rosen opens the door on Keillor in an intimate and spontaneous documentary film.