In 1869 two strangers shot dead a bank teller in Missouri, the first of a series of crimes that would create the legend of Frank and Jesse James, and the only one for which Jesse would be tried. Yet no record of the case was known - until, in 2007, attorney James Muehlberger unearthed the documents. His account reveals how the motive was not robbery, but revenge for an earlier killing during the Civil War.