Claude Rains was perhaps one of the most recognizable character actors from the classic era of film. He was able to play almost any part. Among his best known roles were Captain Louis Renault in Casablanca and Prince John in The Adventures of Robin Hood. The Invisible Man was his first major film role. Prior to this film he had only appeared on screen in one silent film short. The rest of his early acting life had been spent on the hardwood stages. In The Invisible Man, Mr. Rains stars as Dr. Jack Griffin, who disappears one day while working in the lab of his friend and mentor Dr. Cranley His mysterious disappearance from the lab has Flora, Dr. Cranley’s daughter and Jack’s girlfriend, worried regarding his whereabouts. Unbeknownst to the two of them Jack Griffin has done more than simply walked away from the lab and them. He has literally disappeared, becoming completely invisible. Wrapped in bandages to hide his invisibility he sets up a lab in a local Inn to work on a way to bring himself back to normalcy. Sadly the formula which made him invisible is also affecting his mind and he is becoming more unbalanced and violent as time passes.