1. Louis Taylor
Length of Sentence Served: 42 years
A man who was locked up for more than 40 years for setting a deadly fire at an Arizona hotel, which killed 29 persons in 1970. He is none other than Louis Taylor. After years of doubt about his conviction, he has walked free of charge from jail. Investigation reports indicated that he was actually helping people escape the inferno before being arrested later that night. Louis Taylor’s 42 year misery is the longest prison sentence served by an innocent man.