Part detective story, part political history, Timothy Tyson's The Blood of Emmett Till revises the history of the Till case, not only changing the specifics that we thought we knew, but showing how the murder ignited the modern civil rights movement. Tyson uses a wide range of new sources, including the only interview ever given by Carolyn Bryant; the transcript of the murder trial, missing since 1955 and only recovered in 2005; and a recent FBI report...