DAVIS, WILLIAM GEORGE v. the State of Texas

Court of Criminal Appeals of Texas·Decided March 12, 2026·No. AP-77,106·Published

Opinion

IN THE COURT OF CRIMINAL APPEALS OF TEXAS

NO. AP-77,106

WILLIAM GEORGE DAVIS, Appellant v.

THE STATE OF TEXAS

ON DIRECT APPEAL FROM CAUSE NO. 114-0696-21 IN THE 114TH JUDICIAL DISTRICT COURT SMITH COUNTY

RICHARDSON, J., delivered the opinion for a unanimous Court.

OPINION

In October 2021, a Smith County jury convicted Appellant of capital murder for murdering Christopher Greenaway and one or more of John Lafferty, Ronald Clark, and Joseph Kalina during different criminal transactions but pursuant to the same scheme or course of conduct. See TEX. PENAL CODE § 19.03(a)(7)(B). Based

on the jury’s answers to the special issues set forth in Texas Code of Criminal Procedure Article 37.071, Sections 2(b) and 2(e), the trial court sentenced Appellant to death. TEX. CODE CRIM. PROC. art. 37.071, § 2(g). 1 Direct appeal to this Court is automatic. Art. 37.071, § 2(h).

Appellant raises thirteen points of error. Finding no reversible error, we affirm the trial court’s judgment of conviction and sentence of death. BACKGROUND Appellant was a cardiovascular intensive care unit (CVICU) nurse at Christus Mother Frances Hospital in Tyler, Texas. At the guilt phase of Appellant’s capital murder trial, the evidence showed that, from January 2017 through January 2018, Appellant intentionally or knowingly caused the deaths of four post-operative CVICU patients (Greenaway, Lafferty, Clark, and Kalina) and seriously injured two more (Jesus Serrano and Pamela Henderson). He did so by deliberately injecting large amounts of air into the patients’ arteries.

Each of the victims had been progressing well following their respective surgical procedures before they suddenly and unexpectedly suffered severe, seemingly inexplicable overnight strokes. Medical imaging showed that the victims

1 Unless otherwise indicated, all subsequent citations in this opinion to “Articles” refer to the Texas Code of Criminal Procedure.

presented the same “abnormal” and “unique” pattern of brain damage. Eventually, doctors traced this distinctive pattern back to a common cause: the intentional injection of air into the patients’ arterial systems. The evidence showed that each of the victims had been fitted with an “arterial line”—a small catheter placed in the victims’ radial arteries, located in the victims’ wrists, which allowed medical staff to monitor the victims’ vital signs during and after surgery.

Appellant was not formally assigned to any of the victims’ post-operative care. But of all the CVICU night-shift nurses working at the hospital during the relevant time period, Appellant was the only nurse whose shifts coincided with all of the victims’ sudden downturns or “crash[es].” Appellant was also directly linked to each victim’s crash. In Greenaway’s case, Appellant had temporarily assumed care of Greenaway when his assigned CVICU night-shift nurse, Ben Rasberry, took a meal break. In the twenty-to-thirty minutes in which Rasberry was away, Greenaway suffered a stroke. In Lafferty’s case, Appellant had temporarily assumed care of Lafferty when Lafferty’s assigned CVICU nurse briefly stepped out of the room. In Clark’s case, Appellant had been assigned to the care of patients in the rooms next to Clark’s.

In Serrano’s case, as Serrano was crashing, Appellant directed another caregiver to remove a syringe Appellant had attached to Serrano’s arterial line,

because Serrano’s surgeon, who was en route to the patient’s room, “would be looking for it.” In Henderson’s case, when Henderson’s assigned CVICU nurse ran into her room to stabilize her as she began to crash, the nurse witnessed Appellant “already in the room at [Henderson’s] bedside.” Finally, in Kalina’s case, surveillance footage showed Appellant entering Kalina’s room with an empty syringe moments before Kalina began to crash. After leaving Kalina’s room, Appellant watched from down the hall as other medical staff rushed to Kalina’s room to save him.

When hospital administrators grew suspicious of Appellant and asked him to account for his role in what had happened to the victims, Appellant gave implausible and conflicting responses. And when Appellant was finally removed from the hospital’s work schedule, the unexplained crashes suddenly stopped.

At punishment, the State presented evidence from which the jury could rationally deduce that Appellant caused the deaths of three additional CVICU patients (James Blanks, James Sanders, and Perry Frank) and seriously injured three more (Gary Parker, James Wages, and Rickie Glenn). Each of these incidents occurred within the same period of time covered in the guilt phase—January 2017 through January 2018. The State also introduced a recording of a jail call that Appellant made to his ex-wife, in which Appellant made a comment strongly

suggesting that, “a year prior to” him intentionally harming patients in the CVICU, he intentionally caused the death of an elderly woman in the “neuro ICU.” When Appellant’s ex-wife asked, “Was she your first,” Appellant answered, “Yes.”

In addition, the State adduced evidence that, when Appellant was eighteen years old, he entered into a sexual relationship with a thirteen-year-old girl. On one occasion, Appellant contacted the girl while she was staying with her father and asked her to “sneak out” of her father’s house and “leave with him.” When the girl refused, Appellant “said that he would beat the living . . . shit out of [her] dad if [she] did not leave.” UNANIMITY In points of error one and two, Appellant argues that the trial court erred under state and federal law by failing to instruct the jury that, to find Appellant guilty of capital murder, it needed to “unanimously agree about the identity of the victim or victims of the non-predicate offenses.”

At the close of evidence, the trial court charged the jury as follows:

In this case, then, you must determine whether the State has proven beyond a reasonable doubt:

1. The defendant, in Smith County, Texas, on or about the 4th day of

August, 2017, intentionally or knowingly caused the death of Christopher Greenaway by introducing air into the arterial system of Christopher Greenaway; and

2. The defendant, in Smith County, Texas, committed one or more of the following acts:

a. The defendant, on or about the 16th day of June[,]

2017, intentionally or knowingly caused the death of John Lafferty by introducing air into the arterial system of John Lafferty; or

b. The defendant, on or about the 26th day of July, 2017, intentionally or knowingly caused the death of Ronald Clark by introducing air into the arterial system of Ronald Clark; or

c. The defendant, on or about the 25th day of January, 2018, intentionally or knowingly caused the death of Joseph Kalina by introducing air into the arterial system of Joseph Kalina;

and

3. The murder of Christopher Greenaway and the murder, or murders, of John Lafferty, or Ronald Clark, or Joseph Kalina were committed during different criminal transactions but pursuant to the same scheme or course of conduct.

The jury must unanimously agree that the State proved all of the elements of this case beyond a reasonable doubt[,] except that the jury need not be unanimous as to which, if any, of the deaths of John Lafferty, Ronald Clark, and Joseph Kalina were intentionally or knowingly caused by the defendant, in the manner alleged above, so long as all members of the jury unanimously find beyond a reasonable doubt that the defendant intentionally or knowingly caused at least one

of those deaths, in the manner alleged above, in addition to the defendant having intentionally or knowingly caused the death of Christopher Greenaway in the manner alleged above.

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DAVIS, WILLIAM GEORGE v. the State of Texas, (Tex. 2026).

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