State v. Jackson, 306 Ga. 626

Monquez Jackson was tried for malice murder; three co-defendants (Sade Britt, Dwayne Britt, Tomeka Porter) had plea or cooperation agreements with the State; Porter did not testify at Jackson’s trial.
Sade testified that Jackson shot the victim and she used the victim’s ATM card; Dwayne’s testimony was inconsistent and he denied seeing a gun; Porter had made a pretrial statement allegedly exculpatory for Jackson but was not called.
During pre-closing discussions the State sought to bar defense references to Porter, then withdrew the motion but said it would say only that it elected not to call her. The court allowed the defense to refer to what was said in opening.
In closing, defense argued Porter was not called and wondered what she would say; the DA then told the jury (over objection) that Porter would have only corroborated post-murder conduct (e.g., cleaning the car), omitting her prior exculpatory statement.
The trial court found the prosecutor’s remark was an improper comment on matters not in evidence, granted a mistrial, and later barred retrial under the Double Jeopardy Clause after finding the prosecutor intentionally made the comment to goad the defense into seeking a mistrial.

Issue	Plaintiff's Argument (State)	Defendant's Argument (Jackson)	Held
Whether the trial court abused its discretion in granting a mistrial for prosecutor’s improper closing argument	The prosecutor’s comment was a reasonable inference from Sade’s testimony and an invited response to defense mentioning Porter; curative instruction would suffice	The comment was facts not in evidence that prejudiced the jury and a mistrial was required	The court affirmed: mistrial within trial court’s broad discretion given prejudice and non-overwhelming evidence
Whether Double Jeopardy bars retrial after a defense-requested mistrial caused by prosecutorial misconduct	Retrial is allowed after a mistrial; the prosecutor did not intend to goad the defense into mistrial	Retrial barred because prosecutor intentionally made improper remarks to provoke a mistrial and obtain a new chance to convict	The court affirmed: plea in bar granted — trial court’s factual finding that the prosecutor acted intentionally to goad the defense was supported and not clearly erroneous

Jones v. State, 292 Ga. 656 (2013) (improper argument can require more than a curative instruction when evidence is not overwhelming)
Powell v. State, 291 Ga. 743 (2012) (invited response doctrine—responses to defense may be less prejudicial but can still be improper)
Varner v. State, 285 Ga. 334 (2009) (trial judge’s assessment of prejudicial impact of argument is entitled to deference)
Roscoe v. State, 286 Ga. 325 (2009) (double jeopardy bars retrial when prosecutor intended to goad defendant into mistrial)
Harvey v. State, 296 Ga. 823 (2015) (mistrial decisions rest in trial court’s broad discretion)
Yarbrough v. State, 303 Ga. 594 (2018) (defendant must show purposeful prosecutorial conduct to secure retrial)
State v. Thomas, 275 Ga. 167 (2002) (consideration of prosecutor’s experience and case strength relevant to intent finding)