Background
Sean Kirk Wagner, a stepfather, was charged with rape, incest, and sexual battery by an authority figure following allegations that he digitally penetrated his 15-year-old stepdaughter on September 19, 2021. The victim, who was sick with strep throat, was sleeping on the couch when the defendant returned home from work around 3:00 a.m. The victim awoke to find the defendant touching her buttocks and then inserting his fingers into her vagina without consent. She opened her eyes, shoved him away, and ran to her bedroom. The victim immediately told her mother, who confronted the defendant. The defendant apologized repeatedly, saying he was sorry and didn’t mean to hurt her. The victim recorded these apologies on Snapchat without his knowledge and later disclosed the assault to her cheer coach, triggering a mandatory report.
The defendant later claimed he had only spanked the victim for making a mess in the kitchen, not sexually assaulted her. However, the mother testified the defendant’s own statements—comparing his conduct to “cheating” and admitting “I touched your daughter”—indicated he understood the sexual nature of his actions. At trial, the jury convicted the defendant of sexual battery by an authority figure, a Class C felony, and the trial court sentenced him to four years with 364 days in county jail and the remainder suspended on probation.
The Court’s Holding
The Tennessee Court of Criminal Appeals affirmed the conviction and rejected all five appellate arguments. First, the court found no constructive amendment of the indictment when the trial court instructed the jury that sexual battery by an authority figure was a lesser-included offense of rape. Although the defendant was separately charged with sexual battery by an authority figure under Count 3, the inclusion as a lesser-included offense under the rape count (Count 1) was proper and did not amend the charges.
Second, the court upheld the trial court’s admission of evidence that the defendant referred to the victim and her friends as “sluts” under Rule 404(b). The trial court found this evidence relevant to show grooming behavior and the defendant’s intent, not merely to prove character. The evidence demonstrated a pattern of sexualizing the victim and her friends, which was probative of the defendant’s predatory intent and not unfairly prejudicial. Third, the court affirmed the exclusion of the defendant’s polygraph test results, which showed “no deception.” The court reaffirmed Tennessee law that polygraph results are unreliable and inadmissible because they are unduly persuasive and lack the requisite reliability, even when the defendant pays for the examination himself.
Key Takeaways
- Lesser-included offense instructions do not constructively amend an indictment even when the defendant faces a separate count charging that lesser offense.
- Evidence of sexualizing language and grooming behavior is admissible under Rule 404(b) when probative of intent and not substantially outweighed by unfair prejudice.
- Polygraph results remain inadmissible in Tennessee courts regardless of the examiner’s credentials, the examiner’s claimed accuracy rate, or who funded the test.
- A defendant’s own statements immediately following an assault—such as repeated apologies and admissions—are powerful evidence of guilt and consciousness of wrongdoing.
Why It Matters
This decision reinforces Tennessee’s long-standing rejection of polygraph evidence as unreliable, even when the defendant touts expert credentials and statistical claims. The court made clear that the admissibility of polygraphs turns on scientific reliability, not the examiner’s background or the defendant’s willingness to pay for the test. The ruling also clarifies that grooming evidence—seemingly minor acts of sexualizing a minor—is admissible to show predatory intent and may be crucial in cases where the defendant claims innocent contact.
For prosecutors, the decision validates the use of a defendant’s own post-assault statements and recorded apologies as overwhelming circumstantial evidence of guilt. The jury heard the defendant’s voice on the victim’s Snapchat recordings repeatedly apologizing and admitting contact, then heard his later reversal to a spanking narrative—a shift that the jury apparently found unpersuasive. The affirmance also supports the conviction on the lesser sexual battery charge despite the defendant’s not guilty plea and counter-narrative, demonstrating that inconsistent defenses and shifting stories weigh against credibility.