In 1930, the skilled carpenter Vivien Thomas loses his job and is hired by the arrogant Dr. Alfred Blalock as a janitor in Vanderbilt. But soon Vivien is promoted to lab technician due to his skills. Vivien expects to join the medical school but his savings are lost in the Great Depression. Dr. Blalock moves to the Johns Hopkins University and brings Vivien with him. Along the years, they develop the bypass surgery using dogs as guinea pigs. When they save the first blue baby, their surgery technique becomes a worldwide success. But Vivien has no credit for his accomplishment. Will time correct this omission?—Claudio Carvalho, Rio de Janeiro, Brazil