Marcia Clark's book, Trial by Ambush, re-examines the 1953 murder trial of Barbara Graham, who was executed for the crime. Clark's investigation, utilizing trial transcripts and previously unseen documents, reveals that the prosecution withheld key evidence, including a statement from a crucial witness that contradicted his testimony and implicated another party. This withheld information significantly undermined the defense's case. The prosecution's actions, including concealing a key witness, raise serious questions about the fairness of the trial and Graham's wrongful conviction. Clark argues that the prosecution's eagerness for a high-profile conviction, coupled with the lack of resources for the defense, contributed to a miscarriage of justice.