455 P.3d 232
Wyo.2019Background
- Byerly and Pickerill had an on‑again/off‑again relationship; on January 20, 2016 an altercation at the Mangy Moose led Pickerill to allege she was grabbed, thrown into a snowbank and could not breathe. Pickerill later obtained a protection order and reported the incident to police.
- State charged Byerly with twelve counts across multiple dates (domestic batteries, aggravated assault, strangulation, protection‑order violations, witness intimidation); cases were joined for trial with no timely objection by Byerly.
- At trial (July 2017) the jury acquitted Byerly on six counts and convicted him on six counts including aggravated assault and battery (Oct. 11, 2015), domestic battery and strangulation (Jan. 20, 2016), two protection‑order violations, and witness intimidation (Dec. 12, 2016). Sentence included jail and suspended prison terms with probation.
- Post‑trial, Byerly filed a W.R.A.P. 21 motion alleging ineffective assistance of counsel (denied after evidentiary hearing) and a W.R.Cr.P. 33(c) motion alleging Brady suppression of electronic device extraction data (denied). He appealed; briefing deficiencies were noted by the State but the court declined to dismiss the appeal.
- The court reviewed claims of prosecutorial misconduct (vouching and failing to correct false testimony), Brady suppression and materiality of three device extractions, numerous ineffective‑assistance allegations, joinder, denial of a Daubert hearing, and cumulative error, and affirmed conviction and denials.
Issues
| Issue | Byerly’s Argument | State’s Argument | Held |
|---|---|---|---|
| 1) Brady/Rule 33 — alleged suppression of three electronic downloads from victim’s devices | State suppressed extraction data (Feb. 3 .tar file and Dec. 8 full extractions); suppressed material evidence that would have impeached Pickerill and changed verdicts | Defense was notified of Dec. 8 downloads (Feb. 16, 2017 letter) so those were not suppressed; whether State had duty to re‑extract .tar when password became available is unsettled; in any event Exhibit A data not shown to be material | Exhibits B and C (Dec. 8) were not suppressed; court assumed but did not decide duty to create extraction from .tar and found no materiality/prejudice from Exhibit A — no Brady violation and no new trial |
| 2) Ineffective assistance (W.R.A.P. 21) — multiple alleged errors by trial counsel | Counsel failed to obtain device downloads, failed to object to exhibits/testimony, failed to call/prepare witnesses, mishandled evidence and motions, and made harmful opening remarks | Defense investigation was extensive (counsel + investigator); many complaints lack specific showing of prejudice or factual support; tactical choices were reasonable | District court’s factual findings not clearly erroneous; Byerly failed Strickland prejudice or to identify favorable witness evidence — ineffective‑assistance claims denied |
| 3) Prosecutorial misconduct — vouching and failure to correct false testimony | Prosecutor vouched for victim (thanked her candor), emphasized expert comment about victim’s toughness as credibility bolster, and failed to correct alleged false testimony that Pickerill turned over all devices | Only one brief prosecutorial comment constituted improper vouching but was harmless; expert’s comments and prosecutor’s inference were permissible; defendant failed to cite record proof of false testimony | One prosecutorial comment (thanking victim for "candor") was improper vouching but did not materially prejudice Byerly; other claims fail for lack of error or lack of preservation/cogent citation |
| 4) Joinder of charges for trial | Joinder of witness‑intimidation/protection‑order counts with earlier charges prejudiced Byerly | Byerly failed to object to joinder contemporaneously; thus appellate review waived | Claim waived for failure to object pretrial; not considered on appeal |
| 5) Denial of Daubert hearing on State’s domestic‑violence expert | Byerly requested a Daubert hearing to test admissibility of expert testimony | State opposed; record does not show need for full Daubert development on appeal | Argument inadequately briefed (no record cites/analysis); court declined to consider it |
| 6) Cumulative error | Aggregated errors require reversal | State: no prejudicial errors accumulated | No cumulative error; convictions affirmed |
Key Cases Cited
- Brady v. Maryland, 373 U.S. 83 (establishes that suppression of evidence favorable to the accused violates due process)
- Kyles v. Whitley, 514 U.S. 419 (clarifies government suppression and Brady duty)
- Strickland v. Washington, 466 U.S. 668 (establishes two‑prong ineffective‑assistance standard)
- Dockter v. State, 436 P.3d 890 (Wyo. 2019) (Brady/new‑trial standards and review)
- Hooks v. Workman, 689 F.3d 1148 (10th Cir. 2012) (Brady: notice of existence/availability can satisfy disclosure obligation)
- United States v. Gray, 648 F.3d 562 (7th Cir. 2011) (discusses limits on Brady imposing affirmative duty to create/extract electronic evidence)
- Larkins v. State, 429 P.3d 28 (Wyo. 2018) (plain‑error standard for prosecutorial misconduct review)
- Leger v. State, 855 P.2d 359 (Wyo. 1993) (reluctance to dismiss criminal appeals for appellate briefing deficiencies)