LEGAL PRINCIPLE: EVIDENCE LAW – Witness Testimony – Credibility of Single Eyewitness Who is Relative of Deceased
PRINCIPLE STATEMENT
While it is generally unsafe to convict on uncorroborated evidence of a tainted witness, a witness is not automatically tainted merely because they are a relative of the deceased; unless the witness is confronted with their potential bias and evidence shows they are seeking to wrongly implicate the accused, their testimony may be credited.
RATIO DECIDENDI (SOURCE)
"Much is made of the fact that P. W.6 a sister of the deceased is the sole witness of the attack by the appellant. It is true it is not safe to convict on uncorroborated evidence of a tainted witness. But nothing in the whole evidence on record showed the witness was confronted with the fact that she could be an interested party who wished somebody held responsible for the death of her sister."
EXPLANATION / SCOPE
This principle addresses the evidentiary weight of testimony from relatives of crime victims, particularly in sole witness situations. The law recognizes that certain witnesses may be “tainted” by interest or bias that affects credibility: accomplices seeking reduced sentences, persons with financial interest in outcomes, those with demonstrated animosity toward the accused. However, mere relationship to the victim does not automatically create “taint” requiring corroboration. The principle establishes that treating relatives as tainted requires more than status—there must be specific evidence of bias, motive to falsely implicate, or other credibility concerns. Factors relevant to assessing whether a relative witness is tainted include: (1) Evidence of prior animosity or conflict with accused; (2) Financial or other benefit from conviction; (3) Contradictions or inconsistencies in testimony; (4) Demeanor or behavior suggesting bias; (5) Opportunity and motive to fabricate. If such factors exist, the witness should be confronted during cross-examination with the suggestion of bias, allowing them to respond. If not confronted, or if confronted but credibly responding, the relationship alone may not warrant treating testimony as tainted. The principle reflects reality that family members are often present during crimes, particularly domestic violence or family disputes. Categorically excluding or requiring corroboration of relative testimony would leave many crimes unprovable. Courts must assess credibility based on the totality of circumstances, not mechanical rules based on relationship. The tribunal of fact should consider relationship as one factor affecting weight, along with consistency, opportunity to observe, potential bias, and demeanor. Where relatives testify credibly without evidence of fabrication motive, convictions may properly rest on their testimony, even if uncorroborated.