Jacques Fesch was a French man born in 1930 who became a servant of God following a profound religious conversion while awaiting execution. After committing a robbery and killing a police officer in 1954, he spent his final years in La Santé Prison. During his incarceration, he transitioned from a life of crime and dissipation to one of deep Catholic devotion. He is primarily remembered for the diaries he kept, which document his spiritual journey and his intense faith during his time behind bars.