How have the courts dealt with a defense counsel's objection to an expert's testimony?

5 Appellants assert various other claims of prosecutorial misconduct which clearly are without merit. The fact that a grand jury indictment is based solely on hearsay evidence does not automatically require its dismissal. Costello v. United States, 350 U.S. 359 (1956). Similarly, the court properly overruled defense counsel's objection to a handwriting expert's testimony. The prosecutor informed defense counsel the previous day of the likelihood of such testimony, but did not produce the report at that time because it was not completed until that night. The expert had not been engaged until well into the trial.