Opinion
Jimmy Lee Bridgeman appeals his jury trial conviction for incest, Code § 18.2-366, for which he was sentenced to five years in the penitentiary. Because we find the evidence was insufficient as a matter of law to convict appellant of incest, we address only that issue.
The standard fór review of criminal convictions requires that we consider the evidence in the light most favorable to the Commonwealth, giving it all inferences fairly deducible therefrom.
Sutphin
v.
Commonwealth,
On November 2, 1983, Sandra Bridgeman, appellant’s thirteen year old daughter, gave birth to a son. At the request of the Washington County Department of Social Services, a search warrant
1
was issued
The Commonwealth’s entire case against appellant was based upon expert testimony involving the results of the Human Leucocyte Antigen (HLA) blood test which was performed on the blood of appellant, his daughter Sandra, her brother Gerald and her infant son. No complaint or allegation of incest was ever made by Sandra, the alleged victim, and there was no direct testimony that an incident of incest had indeed occurred. Dr. G. L. Ryals, who was qualified as an expert in tissue typing and serology, testified that nine blood typing systems*—two more than routinely recommended—were conducted, “to give [the appellant] additional chances to be excluded” as the potential father of the infant boy. None of the tests excluded appellant, although they did exclude Sandra’s brother Gerald. Dr. Ryals stated that the test results showed that appellant and the infant boy “share common genetic markers” that are not shared by Sandra. From the results of the blood test, Dr. Ryals stated that he calculated a 99.58% probability that appellant was the father of the infant.
The Commonwealth’s case, which was entirely circumstantial, involved a two-step inference: (1) the HLA blood test results showed a 99.58% probability that appellant was the father of the infant, and (2) the birth of a child is proof of sexual intercourse by the mother. Where evidence is entirely circumstantial, all necessary circumstances proved must be consistent with guilt and inconsistent with innocence, and must exclude every reasonable hypothesis of innocence.
Sutphin,
While the HLA test can conclusively
exclude
a person as the biological parent of a child, the results also provide the basis to calculate an affirmative
probability
of paternity for an individual not excluded by the HLA blood test results.
2
However, in a criminal prosecution, based entirely on circumstantial evidence, “a suspicion of guilt, however strong, or even a probability of guilt, is insufficient to support a criminal conviction.”
Bishop
v.
Commonwealth,
Sandra, called as a Commonwealth witness, denied that she had sexual intercourse with her father. In response to questioning by the Commonwealth’s attorney as to the paternity of her child, she named a man who drove a school bus for her elementary school. The Commonwealth did not call the school bus driver as a witness. Investigator Allen Kelly, testifying for the Commonwealth, stated that Sandra told him when he questioned her in October of 1983 that she had intercourse “with some fellow she didn’t know at Meadowview Elementary School . . . and she said she did not know his name and could not identify him . . . .” The Commonwealth urges that its case was not weakened by Sandra’s testimony, because her prior statements were contradictory and therefore her credibility as a witness was undermined. However, we find that Sandra’s prior statements to Officer Kelly concerning the paternity of her baby were not inconsistent with her testimony at trial. She further explained that she was afraid of the man she had sex with at school, and he had threatened to “come back and do the same thing” if she told on him.
We are faced with a situation in which the alleged victim of the crime, called as a witness by the Commonwealth, denied its occurrence. Her testimony was not impeached. Although she expressed love for her father and a desire that he not go to jail, no effort was made to declare her an adverse witness or to discredit her testimony.
The weight which should be given to evidence and whether the testimony of a witness is credible are questions which the fact finder must decide. However, whether a criminal conviction is supported by evidence sufficient to prove guilt beyond a reasonable doubt is not a question of fact but one of law. A conviction based upon a
It can be safely said that in Virginia there is no principle more firmly imbedded in the body of the law, or one that has been more often stated, than the principle that in every criminal case the evidence of the Commonwealth must show, beyond a reasonable doubt, every material fact necessary to establish the offense for which a defendant is being tried.
McGhee
v. Commonwealth,
The Commonwealth urges that the results of the blood tests alone were sufficient to establish that appellant had sexual intercourse with his daughter. The Commonwealth cites
Buckland
v.
Commonwealth, 229
Va. 290,
It is a question of first impression in Virginia whether the results of HLA blood tests alone are sufficient to establish guilt beyond a reasonable doubt in a criminal prosecution. The HLA test has gained wide acceptance in the medical and legal communities as being a scientific procedure which yields reliable results. It has been characterized as a “genetic fingerprint” that can exclude paternity in most instances and from which a statistical probability of paternity can be calculated in those instances where the results do not exclude paternity. 4 In this case we need not decide whether under different circumstances the HLA test result alone may suffice to prove incest beyond a reasonable doubt. On the record where the alleged victim testifies as a witness for the Commonwealth and denies the act of incest, we hold that it did not.
Although the expert, Dr. Ryals, testified that in considering the HLA test results the fact that the accused was also the father of the mother of the child would not have any bearing on the ability of the test to exclude paternity, he admitted that there is no statistical data for comparing probability of paternity in incestuous situations with nonincestuous unions. Additionally, Dr. Ryals testified there is an assumption in the calculation of a probability of paternity that there is a fifty percent chance that the man is the father of the child; the fifty percent basis “assume [s] that the . . . alleged father and the mother are equally credible in their respective contentions,” because the typical situation is one in
The Commonwealth’s own evidence, including the testimony of the expert regarding the lack of statistical information concerning the effect which incestuous relationships have on increasing the probability of the HLA results indicating paternity, and the denial by the alleged victim that intercourse occurred between her and appellant, creates a reasonable doubt that appellant is guilty of the crime charged. The circumstantial evidence presented by the Commonwealth, while showing a high probability of paternity, cannot without more overcome the direct evidence of the Commonwealth presented through an unimpeached, credible witness-victim that the accused did not commit the crime. Because we find that the Commonwealth’s direct evidence established reasonable doubt of sexual intercourse, the circumstantial evidence showing a probability of paternity was insufficient as a matter of law to find appellant guilty of incest.
Reversed.
Koontz, C.J., and Moon, J., concurred.
Notes
The affidavit supporting the search warrant was based on separate complaints filed by three doctors. Each doctor examined appellant’s daughter during her pregnancy and expressed their suspicions Of incest. The suspicions were based upon the doctors’ observations of “overprotectivchess of the father (appellant), the father bringing the girl in for her appointments during the pregnancy, the fact that the child did not flinch during examination of the vaginal area which indicated prior sexual conduct, the fact that the child was not upset by the pregnancy, and the fact that the father didn’t want anyone in Washington County to know about the visit to the doctor.”
When a child’s HLA antigens are cómpared to those of his mother, it becomes immediately apparent which two antigens came from the mother and which two must therefore have come from the father. A man is
excluded
if he and the mother both lack an antigen which the child has. Conversely, because the HLA antigens may be found together in various arrangements, making possible tens of thousands of HLA combinations, the possibility that a child and a putative father share a common haplotype, but are unrelated, is very unlikely, and provides a basis for a calculation of a statistical probability of paternity.
See
Lemmon & Murphy,
The Evidentiary Use of the HLA Blood Test in Virginia,
19 U. Rich. L. Rev. 235, 238 n.15 (1985);
see also Jones
v.
Robinson,
Jones
v. Robinson,
The use of “probability of paternity” evidence has been criticized. See E. Cleary, McCormick on Evidence § 211 (3d ed.1984).
“Traditionally, laboratories use a neutral figure of 50% in their calculations.” Reisner & Bolk, A Layman's Guide to the Use of Blood Group Analysis in Paternity Testing, 20 J. Family L. 657, 674 (1982). For a criticism of this approach, see E. Cleary, McCormick on Evidence, supra, note 4.
