Q:Generate a question about the following movie plot: In 1934, Don Drake returns to Chicago after a long sea voyage. He discovers that his brother has been convicted of murdering his wife. Drake is unable to save him from the electric chair, but he is convinced of his brother's innocence and is determined to clear his name. His investigation leads him to the Loveland Ballroom, the scene of the murder, where his brother was involved in a dance marathon run by Jim Moss. Drake begins seeing his dead brother walking the foggy streets. Drake kills a man named Perdido, who later climbs out of a coffin and attacks him. Police Lieutenant Reardon doesn't believe Drake's story, and Reardon later finds Perdido is alive and well. As Drake presses his investigation, he learns of a mystery man named Varrick, whom no one has ever seen and who might be using Haitian voodoo to bring people back from the dead.
A:
How was his brother's sentence carried out