People v. Garrison
2017 COA 107
Colo. Ct. App.2017Background
- Defendant Lawson Garrison and his then‑partner created a Gmail account in the victim’s name and sent derogatory/threatening emails; they reported those emails to police and sought a protection order against the victim.
- Police obtained Google records showing two IP addresses used to access the Gmail account; investigators associated those IPs with two ISPs, and the ISPs identified one IP as tied to Garrison’s home and the other to his wife’s employer.
- Charges initially were brought against the victim but were dropped after the IP tracing; investigation then focused on the Garrisons. Garrison was indicted on perjury, attempted influence of a public servant (three counts), conspiracy to attempt to influence a public servant, felony menacing, and possession of a defaced firearm.
- At trial, police officers testified (as lay witnesses) about obtaining Google records, identifying IP addresses, and linking those IPs through ISPs to physical locations. Defense argued this was expert testimony and sought a continuance to prepare a computer expert.
- The trial court denied the continuance but allowed the defense expert to testify despite untimely endorsement; the jury convicted Garrison on all counts.
- On appeal, the court affirmed convictions unrelated to IP‑address evidence (felony menacing, defaced firearm), reversed and remanded for a new trial on counts that depended on the IP‑linkage (perjury, attempts/conspiracy to influence a public servant), and held the lay IP testimony was improper expert testimony under CRE 701(c).
Issues
| Issue | Plaintiff's Argument | Defendant's Argument | Held |
|---|---|---|---|
| Whether denial of a continuance was an abuse of discretion | State: denial was within court's discretion given prior continuances and manageable prejudice; prosecutor noted expert was ready | Garrison: new counsel was unprepared and needed time to obtain/coordinate a computer expert to address spoofing/hacking defense | Denial not an abuse of discretion; no reversible prejudice shown as to convictions unrelated to IP testimony; but reversal granted on counts tied to IP evidence (since those will be retried) |
| Whether police officers’ testimony tracing Gmail IPs to ISPs and to a physical address was admissible as lay opinion under CRE 701 | State: testimony was routine investigative background that ordinary people could understand; officers were describing investigative steps | Garrison: testimony required specialized technical knowledge (IP behavior, ISP logs, uniqueness/stability of IPs) and thus should have been offered through a qualified expert | Court held admission of that portion of lay testimony abused discretion because linking IP → ISP → physical subscriber location requires specialized knowledge beyond ordinary experience; error was not harmless for counts that relied on that linkage |
Key Cases Cited
- People v. Stewart, 55 P.3d 107 (Colo. 2002) (distinguishes lay observations from expert deductions that require specialized training)
- People v. Veren, 140 P.3d 131 (Colo. App. 2005) (police lay testimony may cover basic drug observations but not specialized thresholds)
- People v. Alley, 232 P.3d 272 (Colo. App. 2010) (upholding denial of continuance where counsel actively proceeded at trial)
- People v. Denton, 757 P.2d 637 (Colo. App. 1988) (defendant must show actual prejudice from denial of continuance to obtain reversal)
- United States v. Steiger, 318 F.3d 1039 (11th Cir. 2003) (general explanation of IP addresses, static vs dynamic addressing, and ISP logs)