The defendant appeals from his conviction of second degree murder on an indictment charging first degree murder. The defendant’s most serious contention on appeal is that it was error for the prosecutor to ask the defendant, on cross-examination, in a long series of questions described below, whether he had heard particular testimony of various witnesses. The successive inquiries we regard as improper and we reject the contention of the Commonwealth that the manner of this prosecutor’s questioning was merely a permissible *708 technique to focus a witness’s attention on particular facts that the examiner wished to explore.
It is improper to ask a witness to comment on the credibility of other witnesses or his own testimony in the manner which was attempted in the instant case.
Commonwealth
v.
Ward,
Unlike
Ward,
where the judge allowed but a single improper question, here there were at least a hundred improper questions on a cross-examination which covered over one hundred pages of the transcript. Throughout the entire cross-examination of the defendant the prosecutor repeatedly interspersed the question, “Did you hear [a particular witness] testify that . . . ?” Contrast
Commonwealth
v.
Reddick,
There is another problem with this particular trial tactic. Such questioning transforms the interrogation stage of the trial
*710
into the phase traditionally reserved for argument and summation. The questions appear to have been essentially argumentative and should have been excluded on objection.
6
See Liacos, Massachusetts Evidence 71 (5th ed. 1981). See also
Commonwealth
v.
Liebman,
In light of the fact that the Commonwealth’s evidence was not overwhelming,
7
it cannot be said that the prosecutor’s conduct had a nonprejudicial and inconsequential effect on the deliberations of the jury.
See Pierce
v.
United States,
We address briefly other issues which might arise on retrial.
1. As to the defendant’s claim that certain prior inconsistent statements of a prosecution witness were erroneously excluded, see
Commonwealth
v.
Cadwell,
2. The judge did not err in allowing the prosecutor to ask the defendant’s wife whether the defendant “liked wearing his knife.” See and compare
Commonwealth
v.
White,
3. Although the Commonwealth was entitled to inquire whether a witness had seen the defendant wearing a knife at the wedding reception, compare
Commonwealth
v.
Monsen,
*711
4. The defendant claims that the judge erred in not allowing his counsel to comment on the failure of the Commonwealth to call one Jack Muldoon as a witness in its case-in-chief. See
Commonwealth
v.
Franklin,
5. As to the defendant’s claim that the judge’s charge trivialized the Commonwealth’s burden of proof, see
Commonwealth
v.
Carballo,
6. On the state of the evidence at the close of the Commonwealth’s case, the defendant was not entitled to a directed verdict of not guilty on so much of the indictment as charged murder. See
Commonwealth v. Richards,
7. As to the defendant’s motion pursuant to Mass.R.Crim.P. 25(b)(2),
Judgment reversed.
Verdict set aside.
Notes
On one occasion, however, when asked “[d]id you hear [a prior Commonwealth witness] testify that he saw you stab [the victim] twice,” the defendant responded, “He’s lying, sir.”
The following illustrates the flavor of the interrogation. The question — “Mr. Stokes testified on the stand that he was telling the truth, didn’t he?” — was immediately followed after a “yes” answer with the question *709 whether there was “[a]ny reason Mr. Stokes would lie to the police.” The defendant’s objection to the latter question was sustained.
The most often stated basis of the defendant’s objections was: “Your Honor, what [the witness] testified is for the jury, and that’s not my recollection of what he said. That would be a conclusionary statement anyway.”
On at least two such occasions, the judge after an objection, felt obliged to say, “That’s not my memory,” or words to that effect.
The assistant district attorney arguing the case on appeal was not the prosecutor at trial.
We agree with the defendant that the use of this kind of question is also a waste of time. Cf.
Commonwealth
v.
Shea,
We summarize briefly the relevant facts. A senseless argument was precipitated by a chance encounter of two groups, the members of which had been drinking. The defendant apparently did not know the victim or his friends prior to the violent altercation. The defendant admitted that he had killed the victim, but claimed that he had acted in self-defense. There was evidence that the victim had provoked the attack and that immediately prior to the actual stabbing, the victim, holding a sheet metal hammer in his hand, was standing face-to-face with the defendant.
