Was the petitioner deprived of a fair trial due to prosecutorial misconduct?

Question Presented . Was the petitioner deprived of a fair trial when the only , Government witness to incriminate him lied to the jury that the defendant appeared before the grand jury and made an incriminating statement upon exiting , when the defendant was not called before the Grand jury, and the Prosecutor lied to the Judge that the defendant did appear in order to : avoid defense's callfor a mistrial? : :