On Tuesday night, the US state of Missouri is planning to execute Marcellus Williams despite a new report from a DNA expert that his lawyers argue supports his claim to innocence. In 2001, Williams, who is now 48, was convicted of the 1998 killing of Lisha Gayle. But his lawyers say new DNA evidence could exonerate him. The Missouri Supreme Court, however, has refused to review that evidence. Williams' lawyer, Kent Gipson, has described the Supreme Court's decision as "baffling". "We petitioned the court to look at the new evidence on August 14th, and less than 24 hours later they...