Jennings & Turner v. United States

District of Columbia Court of Appeals·Decided February 26, 2026·No. 23-CF-0205 & 23-CF-0229·Published

Opinion

Notice: This opinion is subject to formal revision before publication in the Atlantic and Maryland Reporters. Users are requested to notify the Clerk of the Court of any formal errors so that corrections may be made before the bound volumes go to press.

DISTRICT OF COLUMBIA COURT OF APPEALS Nos. 23-CF-0205 & 23-CF-0229 RONNIKA M. JENNINGS & DEREK BRIAN TURNER, APPELLANTS, V.

UNITED STATES, APPELLEE.

Appeals from the Superior Court of the District of Columbia (2018-CF1-006028 & 2017-CF1-015352)

(Hon. Marisa J. Demeo, Trial Judge)

(Argued October 16, 2025 Decided February 26, 2026)

Matthew Martens, with whom Zachary Halpern, Paul Piazza, and Leah Fugere were on the briefs, for appellant Ronnika M. Jennings.

Madeleine Joseph, with whom Tobias S. Loss-Eaton, Scott Lowder, Abigail Scheper, and Susan Whaley were on the briefs, for appellant Derek Brian Turner.

Elizabeth Gabriel, Assistant United States Attorney, with whom Jeanine Ferris Pirro, United States Attorney, and Chrisellen R. Kolb, Daniel J. Lenerz, and Michael Truscott, Assistant United States Attorneys, were on the brief, for appellee.

Before BECKWITH and SHANKER, Associate Judges, and THOMPSON, Senior Judge.

SHANKER, Associate Judge: A violent feud between residents of the Southeast

D.C. neighborhoods of Wahler Place and Trenton Park left three individuals dead

and several more injured over the course of ten months in 2016 and 2017. Appellants Derek Brian Turner and Ronnika Jennings were charged with dozens of offenses related to these events. Following a jury trial, Mr. Turner was convicted of committing two murders, multiple assaults, an array of firearm offenses, and several obstruction of justice offenses. Ms. Jennings, a Metropolitan Police Department (MPD) employee, was acquitted of her most serious charges but was convicted of being an accessory after the fact (AAF) and obstructing justice for using her position within the police department to assist Mr. Turner in the wake of his crimes. We affirm Mr. Turner’s convictions for the murders, assaults, and related firearm offenses because they rest on solid evidentiary and constitutional ground. The government, however, presented insufficient evidence to support Ms. Jennings’s AAF convictions, so those must be reversed. In addition, we agree with all parties that both appellants’ obstruction of justice convictions must be vacated.

I. Background

A. Summary

The string of violent incidents between residents of the Wahler Place and Trenton Park neighborhoods began in May 2016. Shootings that occurred on January 7, February 17, and March 1, 2017, however, form the core of this case. The first incident left its target, Devin Hall, dead. The second left a bystander injured

but its two main targets unscathed. The third left Andrew McPhatter, one of the uninjured targets of the February 17 shooting, dead. In the days after each of these incidents, Mr. Turner called Ms. Jennings on the phone, and Ms. Jennings ran a search in an MPD database for information related to each incident before calling Mr. Turner back.

The next stage of this case began on March 8, when police temporarily seized and then searched Mr. Turner’s car after Mr. Turner was the target of an attempted drive-by shooting. This search led to evidence connecting Mr. Turner to the three shooting incidents mentioned above—including a gun likely used in the shootings— and he was arrested. His two cell phones were also seized and then searched. Thereafter, Mr. Turner and several associates planned to pin ownership of the gun on someone else.

Mr. Turner and Ms. Jennings were eventually indicted for participating in the violent feud between residents of the two neighborhoods. Following pretrial challenges seeking to suppress evidence against them and an eleven-week trial, a jury convicted Mr. Turner of most of the charges against him and acquitted Ms. Jennings of all but five of the charges she faced.

B. The Feud Between Residents of Wahler Place and Trenton Park In May 2016, a resident of Wahler Place was murdered. The next day, Mr. Turner, also a Wahler Place resident, was shot nearby.

Two months later, a Trenton Park resident was shot. Later that same day, Mr. Turner, a female associate, and another Wahler Place resident named Antwan Jones were the targets of a shooting near Wahler Place. Mr. Jones suffered non-fatal gunshot wounds, while the other two escaped mostly unharmed. That same night, a hail of gunfire disrupted a large social gathering in a parking lot near the Trenton Park neighborhood, leaving two wounded and damaging several cars.

A month after that, in August 2016, several Trenton Park residents appeared in a video posted on YouTube (the “parking lot video”) in which they referenced the parking lot shootout. A video later discovered on Mr. Turner’s phone showed Mr. Turner and another Wahler Place resident sitting in a car while the other Wahler Place resident made statements responding to the August 2016 parking lot video.

On November 23, 2016, a shooting took place at Wheeler Market, a corner store near Wahler Place. Mr. Turner was wearing a GPS tracking device at the time in connection with a different matter, and the GPS tracking data showed his device near Wheeler Market around the time of the shooting.

That same day, after the Wheeler Market incident, Mr. Turner twice called Ms. Jennings, an MPD station clerk. Mr. Jones, who was Mr. Turner’s Wahler Place associate and Ms. Jennings’s longtime friend, had introduced Mr. Turner to Ms. Jennings. Ms. Jennings worked in a Southeast D.C. police district, where she primarily helped members of the public with requests for information.

As part of her job, Ms. Jennings had access to Cobalt, MPD’s internal records-

management system, along with the Washington Area Law Enforcement System (WALES) and National Crime Information Center (NCIC) databases, which contain police information from other sources. Although members of the public cannot access any of these databases, station clerks like Ms. Jennings can use Cobalt to generate a “public packet” of certain information—such as a police report documenting a burglary intended for use in an insurance claim—suitable for public disclosure. Cobalt’s “internal packet,” by contrast, contains more sensitive information, including the “sources, methods, [and] witnesses” associated with a particular investigation. On the day of the Wheeler Market shooting, Ms. Jennings accessed a Cobalt report for that incident ten minutes after Mr. Turner called her.

C. The January 7, February 17, and March 1, 2017, Shootings Shortly after the New Year, on January 7, 2017, a Trenton Park resident named Devin Hall was shot to death in his car. One witness told 911 that the

shooter—one person—had gotten out of a white Lexus bearing paper tags, shot the victim, and fled in the same white Lexus. Another witness, Sharon Mouton, described seeing a “white, tan-ish” “Pontiac-ish vehicle” in the parking lot where the shooting took place. At the time, Mr. Turner owned and drove a white Lexus.

Ms. Mouton saw two people get out of the car and start shooting, then drive quickly away. Ms. Mouton identified one shooter as “heavy-set” and “light skinned- ish” and the other as having “brown” skin and wearing dreadlocks. Mr. Jones, one of the victims in the July 2016 shooting along with Mr. Turner, weighed between 250 and 260 pounds. Mr. Turner wore dreadlocks at the time. Police recovered .40 caliber and 10 millimeter shell casings from the scene of the murder. Two cell phones later recovered from Mr. Turner had pinged a cell tower 0.2 miles from the shooting minutes after the shooting took place.

Free access — add to your briefcase to read the full text and ask questions with AI

Jennings & Turner v. United States, (D.C. 2026).

Jennings & Turner v. United States (Jennings & Turner v. United States) — published by Counsel Stack Legal Research, free access to 12M+ legal documents.

Related

Chambers v. Maroney
399 U.S. 42 (Supreme Court, 1970)
Mincey v. Arizona
437 U.S. 385 (Supreme Court, 1978)
United States v. Ross
456 U.S. 798 (Supreme Court, 1982)
Arrington v. United States
382 A.2d 14 (District of Columbia Court of Appeals, 1978)
Rivas v. United States
783 A.2d 125 (District of Columbia Court of Appeals, 2001)
Peoples Drug Stores, Inc. v. District of Columbia
470 A.2d 751 (District of Columbia Court of Appeals, 1983)
Barkley v. United States
455 A.2d 412 (District of Columbia Court of Appeals, 1983)
Downing v. United States
434 A.2d 409 (District of Columbia Court of Appeals, 1981)
Fields v. United States
484 A.2d 570 (District of Columbia Court of Appeals, 1984)
Robinson v. State
249 A.2d 504 (Court of Special Appeals of Maryland, 1969)
McNeely v. United States
874 A.2d 371 (District of Columbia Court of Appeals, 2005)
Roy v. United States
652 A.2d 1098 (District of Columbia Court of Appeals, 1995)
McClain v. State
268 A.2d 572 (Court of Special Appeals of Maryland, 1970)
Butler v. United States
481 A.2d 431 (District of Columbia Court of Appeals, 1984)
Ferguson v. United States
977 A.2d 993 (District of Columbia Court of Appeals, 2009)
Odeniran v. Hanley Wood, LLC
985 A.2d 421 (District of Columbia Court of Appeals, 2009)
Little v. United States
709 A.2d 708 (District of Columbia Court of Appeals, 1998)
Clark v. United States
418 A.2d 1059 (District of Columbia Court of Appeals, 1980)
Moore v. United States
757 A.2d 78 (District of Columbia Court of Appeals, 2000)
James v. United States
39 A.3d 1262 (District of Columbia Court of Appeals, 2012)