¶1OPINION OF THE COURT
¶2On May 2, 1986, Michael Weiss, appellant, was convicted by a jury in the Court of Common Pleas of Bucks County of Rape, Statutory Rape, Incest, Indecent Assault, Simple Assault, Endangering the Welfare of Children and Corruption of Minors. Subsequent to the filing of post-trial motions in arrest of judgment and for a new trial, trial counsel withdrew his appearance. Present counsel entered their appearance on behalf of appellant, and filed supplemental post-verdict motions, raising issues concerning after-discovered evidence and ineffective assistance of counsel. An evidentiary hearing was held before the trial court on November 17, November 20, and December 3, 1987. New counsel was then granted permission to litigate supplemental post-verdict motions nunc pro tunc. Following argument to the trial court en banc, appellantâs post-verdict motions were denied in an opinion and order dated January 5,1989. On February 3, 1989, appellant was sentenced to a period of incarceration of not less than five (5) years nor more than ten (10) years. On November 27, 1989, the Superior Court affirmed the judgment of sentence. 397 Pa.Super. 648, 571 A.2d 507. This appeal followed. Appel*4lant claims, inter alia,
¶3The charges brought against appellant arose out of the following circumstances. Appellant, separated from his wife for two years, lived in an apartment with two other men. His daughter, the victim, four years old at the time of the incident, lived with her mother. She frequently visited her father for several days at a time, and did so between November 11-16, 1985. She testified at trial that, one night during that visit, her father [appellant] woke her up, inserted his finger and his penis into her vagina, put Cheerios into her vagina, and cut her vaginal area with a plastic knife. She also testified that when she screamed her father pointed a gun at her. The victimâs mother, appellantâs estranged wife, testified that her daughter acted abnormally upon her return from her fatherâs home on November 16, 1985, and that on November 19, 1985, while bathing her daughter, she discovered a cut approximately one-inch long on her daughterâs vaginal area. When unable to reach the family doctor, she took her daughter to Delaware Valley Medical Center emergency room.
¶4The examining physician at the hospital, testified that he observed a one inch cut on the childâs genital area consistent with having been cut by a plastic knife. Two hospital nurses also testified that the child had a cut on her vagina. One of the nurses, admittedly not an expert in wound dating, testified that the cut was âprobably about a day *5old.â (N.T. 5/1/86, p. 200).
¶5The defenseâs case consisted principally of the testimony of appellant, who vehemently denied the accusations, appellantâs two roommates who corroborated appellantâs testimony, and two children of one of appellantâs roommates who testified that they had occasionally seen appellant and the victim in bed together. One child testified that on either November 15 or 16, 1985, she and the victim had gone to sleep on the sofa bed, but when she awoke the next morning the victim was in appellantâs bed. She could not recall whether appellant was at home at the time. Appellantâs father testified to a recantation by the victim. No character witnesses were called on behalf of appellant. Appellant was found guilty of the aforementioned crimes.
¶6Appellant now, in his appeal before us, contends that trial counselâs failure to call character witnesses on his behalf constitutes ineffective assistance. Post-trial testimony reveals that several witnesses would have testified to appellantâs good character. Many of the same witnesses also would have testified to his wifeâs bad character.
¶7The standard to be applied in reviewing claims of ineffective assistance of counsel is well settled. âThe threshold inquiry in ineffectiveness claims is whether the issue/argument/tactic which counsel has foregone and which forms the basis for the assertion of ineffectiveness is of arguable merit; for counsel cannot be considered ineffective for failing to assert a meritless claim.â Commonwealth v. Durst, 522 Pa. 2, 559 A.2d 504 (1989); Commonwealth v. Pursell, 508 Pa. 212, 495 A.2d 183 (1985). Once this threshold is met we apply the âreasonable basisâ test to determine whether counselâs chosen course was designed to effectuate his clientâs interests. If we conclude that the particular course chosen by counsel had some reasonable basis, our inquiry ceases and counselâs assistance is deemed *6effective. Commonwealth ex rel. Washington v. Maroney, 427 Pa. 599, 235 A.2d 349 (1967). If we determine that there was no reasonable basis for counselâs chosen course then the accused must demonstrate that counselâs ineffectiveness worked to his prejudice. Commonwealth v. Pierce, 515 Pa. 153, 527 A.2d 973 (1987). The burden of establishing counselâs ineffectiveness is on the appellant because counselâs stewardship of the trial is presumptively effective. Commonwealth v. McNeil, 506 Pa. 607, 487 A.2d 802 (1985).
¶8At the hearing on post-verdict motions, appellant offered the testimony of several character witnesses in support of his claim that trial counsel was ineffective for failing to present evidence of appellantâs good character, and failing to present evidence of appellantâs wifeâs bad character. In addition to appellantâs employer and co-worker, these witnesses included numerous friends and relatives. Notably, appellantâs wifeâs parents and brother testified to appellantâs good character reputation and his wifeâs lack thereof. All of the witnesses testified that they would have been willing to testify at trial on appellantâs behalf had they been asked by appellantâs attorney.
¶9In a case such as this, where there are only two direct witnesses involved, credibility of the witnesses is of paramount importance, and character evidence is critical to the juryâs determination of credibility. Evidence of good character is substantive, not mere makeweight evidence, and may, in and of itself, create a reasonable doubt of guilt and, thus, require a verdict of not guilty. Commonwealth v. Neely, 522 Pa. 236, 561 A.2d 1 (1989). Appellantâs claim, therefore, is not without merit.
¶10We must now determine whether appellantâs counsel had a reasonable basis for failing to present character witnesses at appellantâs trial. Trial counsel testified at the post-trial hearing, that his theory of the case contemplated the use of character testimony, but that after contacting the witnesses given him by appellant, he concluded that he could not use character witnesses. (N.T. 11/17/87, p. 27). *7Although his recollections were hazy, he stated that he contacted appellantâs employer and a co-worker, and concluded that the employer didnât know appellant very well, and that the co-worker would not be helpful. Trial counsel recalled speaking with appellantâs wifeâs mother who âfavored Michaelâs story over Victoriaâs story,â but vaguely recalled that she wasnât going to come forward and testify.
¶11Trial counselâs failure to use appellantâs numerous relatives as character witnesses was based upon his perception of familial character evidence. He testified that, â[a]s a policy matter, I donât ever recall ever putting on character evidence of family members. I think the jury just thinks itâs garbage.â Counsel admits that he never discussed with appellant the possibility of presenting character evidence from appellantâs family. (N.T. 11/17/87, p. 28). Counselâs preconceived notions about familial character evidence led to his failure to even interview appellantâs relatives, and precluded him from assessing their credibility. Although familial character witnesses generally lack the credibility of unbiased non-familial witnesses, an attitude that they are per se worthless, is sufficient evidence of counselâs incompetency.
¶12In light of the overwhelming need for character evidence in a case such as this, counselâs limited investigation into the quantity and/or quality of potential character witnesses on behalf of appellant, and counselâs prejudice toward familial witnesses, we find no reasonable basis to support trial counselâs decision not to call any character witnesses.
¶13Finally, we must determine whether appellant was prejudiced by counselâs deficient performance. See, Commonwealth ex. rel. Washington v. Maroney, 427 Pa. 599, 235 A.2d 349 (1967) and Commonwealth v. Pierce, 515 Pa. 153, 527 A.2d 973 (1987). Appellant must demonstrate that the alternative not selected by counsel offered a substantially greater chance of success than the tactic chosen. Commonwealth v. Saxton, 516 Pa. 196, 532 A.2d 352 (1987). To properly determine whether prejudice resulted from the quality of counselâs representation, we must focus *9on counselâs overall trial strategy and view his performance as a whole. Id. at 203, 532 A.2d at 355.
¶14Counselâs stated strategy was not to contest the physical findings of sexual abuse, but to focus on the fact that it may have been appellantâs wife, not appellant who âset the whole thing up.â (N.T. 11/17/87, p. 34). It would have been entirely consistent as well as highly beneficial, in light of this strategy, to present character witnesses, who not only would vouch for appellantâs good character, but would have impeached his wifeâs character at the same time.
¶15Whereas the defense did not attempt to refute the physical findings, the evidence regarding the perpetrator boiled down to appellantâs word against the word of his wife and daughter. The only issue then, was whether appellant or someone else was responsible for what happened.
¶16We find, therefore, that even with the presumption of adequate performance, trial counselâs defense was the result of unreasonable professional judgment, and there is a reasonable probability that, absent trial counselâs error, the jury would have had a reasonable doubt respecting appellantâs guilt. Hence, the fundamental fairness of the proceeding has been undermined by the ineffective assistance of appellantâs trial counsel.
¶17The judgment of sentence is reversed and the case is remanded for a new trial.
¶18. We have reviewed appellantâs claims relating to after-discovered evidence in the form of recantation testimony, and the claim that the verdict was against the weight of the evidence and/or based on pure conjecture, and find that they are without merit.
¶19. Due to our disposition of the case based upon this claim, we do not address appellantâs remaining contentions that counsel was ineffective for failing to present witnesses to an alibi; for failing to object to leading questions posed by the district attorney to the victim; for failing to object to the introduction of hearsay declarations; and for failing to present expert testimony as to the meaning of the Commonwealthâs physical evidence.
¶20. It is undisputed that the child was in the exclusive custody of the mother for three days prior to the examination.
¶21. We are bound by the trial courtâs finding that counsel interviewed the potential witnesses suggested by appellant. Trial Court Opinion at p. 13. We note however, that appellantâs wifeâs mother stated that she was never asked to come forward and testify, and appellantâs employer and co-worker stated that they were never contacted by appellantâs attorney.
¶22. This evidence would have been admissible for the purpose of impeaching the credibility of a witness with a conviction for a crime involving dishonesty or false statement. Commonwealth v. Randall, 515 Pa. 410, 528 A.2d 1326 (1987).
¶23. It is important to note that this incident arose in the context of a bitter custody battle, and we are reminded that it was the victimâs mother who initiated the charges.