Can Past Sexual Conduct Be Used as Evidence in a Missouri Sexual Assault Case?
Sexual AssaultIf you’re facing a sexual assault allegation in Missouri, you probably have a lot of questions—including whether the accuser’s past sexual conduct can be introduced as evidence in court.
Missouri has specific rules that limit how someone’s sexual history can be used in criminal trials. Your defense team might be able to introduce some evidence, depending on the specific facts of your case.
Missouri’s Rape Shield Law
Missouri law generally bars evidence or questions about a victim’s or witness’s prior sexual conduct in prosecutions for sexual offenses or related sexual conduct. This includes opinion evidence, reputation, or specific acts. It doesn’t matter whether it’s presented at trial or in pretrial matters.
The statute reflects the principle that the jury should focus on the alleged assault itself, not the sexual history of the complainant. Past sexual activity cannot be used to suggest that someone is more likely to consent or to cast doubt on their credibility.
Limited Exceptions to the Rape Shield Law
There are four narrow exceptions where this kind of evidence may be allowed:
- Prior sexual conduct with the defendant: Evidence of past sexual conduct may be admitted to show consent—but only if the prior conduct is reasonably contemporaneous with the alleged crime. Missouri courts have held that a relationship two years prior is generally not “reasonably contemporaneous” for this purpose.
- Alternative sources: Evidence showing another source of semen, pregnancy, or disease may be admitted.
- Immediate circumstances: Evidence related directly to the circumstances of the alleged crime may be admitted if it helps clarify the case.
- Previous chastity: In rare cases where the law requires proof of a previously chaste character, evidence may be relevant.
Even within these exceptions, courts carefully weigh whether the evidence is truly relevant to a material fact or issue. Judges often hold private hearings to decide what evidence can be introduced. Then, they record and seal the proceedings in case of any potential appeal.
Using Prior Complaints or Fabrication Claims
Missouri courts do allow some limited questioning about prior complaints of sexual abuse, as long as it relates to establishing motive to fabricate the current allegation. Defense teams may use this avenue cautiously, but only to challenge credibility—not to suggest a general pattern of sexual behavior.
Courts require the defense to clearly connect the prior complaint to the accuser’s credibility or motive, rather than just suggesting they have a history of sexual activity.
Defense attorneys must handle this carefully. If done properly, this narrow exception allows the defense to present legitimate questions about credibility without violating Missouri’s strict protections for accusers.
How Judges Evaluate Admissibility
Judges apply a balancing test to determine whether prior sexual conduct is relevant enough:
- Materiality: Is the evidence relevant to a central fact, such as consent or an alternative explanation?
- Prejudice: Will the evidence unfairly bias the jury against the accuser?
- Timing: How recent or closely related is the prior conduct to the current alleged crime?
Even if evidence meets the statutory exceptions, the court may still exclude it if the potential for unfair prejudice outweighs its relevance.
Discuss Your Case with a Knowledgeable Sexual Assault Defense Lawyer in St. Louis
Missouri strictly limits the use of a victim’s or witness’s sexual history in sexual assault cases. Only narrowly defined exceptions exist, and judges carefully review any evidence under the statute to prevent prejudice—but an experienced lawyer can help you determine whether you may be able to introduce limited evidence in your defense. The attorneys at Richard H. Sindel, Inc. in St. Louis, MO, can help evaluate whether any evidence falls within the statutory exceptions. We’ll advocate for your rights throughout the process. Contact us today to learn more.