Troy Davis, executed by the state of Georgia, went to his grave claiming he was innocent. Davis joins a long list of controversial death row cases that ended with a question mark – like the famous Sacco and Vanzetti case, said retired lawyer and author Ted Grippo, who has uncovered new evidence that may have saved the pair.

Grippo, who has more than 50 years of experience in law enforcement and private practice, explains his findings in his new book, “With Malice Aforethought: The Execution of Nicola Sacco and Bartolomeo Vanzetti.”

“This case brings into focus the proper role of the public prosecutor and judge in criminal proceedings,” Grippo said. “The role of the prosecution shouldn’t be to seek conviction. It should be to seek justice, at all costs.”