Background
On March 11, 2020, Anthony Douglas Shoffner Jr. stabbed his mother Rebecca Griffin and stepfather Kenneth Griffin to death inside their Houston County, Georgia apartment. That same morning, a maintenance worker saw Shoffner walking the victims’ dogs before he drove off in Kenneth’s maroon Jeep. Shoffner abandoned the dogs at a pet store, sold Kenneth’s gaming equipment at a nearby gaming store, then attacked a separate maintenance worker with a baseball bat at another apartment complex. Police arrested him at a local pharmacy after he verbally confronted a patron. A search of the Jeep yielded a bookbag containing a large chef’s knife, jewelry, watches, and a gaming store receipt; a second knife with dried blood staining was also recovered from the vehicle.
The day after his arrest, Shoffner gave a recorded custodial statement in which he confessed to the killings, identified the murder weapon in the bookbag, and told detectives where he had hidden the victims’ cell phones. Police located the phones exactly where Shoffner said they would be — hidden in a toilet tank inside the Griffins’ apartment. A Houston County jury convicted Shoffner on all counts at a retrial in June 2022 following an earlier mistrial. The trial court sentenced him to two consecutive life terms without parole for the malice murder counts and two consecutive five-year terms for possession of a knife during the commission of a felony. His motion for new trial was denied in September 2025, and he appealed to the Georgia Supreme Court.
On appeal, Shoffner raised four claims: (1) insufficient evidence, (2) erroneous denial of his motion to suppress his custodial statement, (3) erroneous denial of his motion for mistrial based on his sister’s testimony, and (4) constitutionally ineffective assistance of trial counsel in multiple respects.
The Court’s Holding
The Supreme Court of Georgia affirmed the convictions on all grounds. On sufficiency, the court held that under Jackson v. Virginia, 443 U.S. 307 (1979), a sufficiency review considers all evidence admitted at trial regardless of whether some of it may have been improperly admitted — meaning Shoffner could not carve out his confession or other disputed evidence from the analysis. With that standard applied, the court found the evidence overwhelming.
On the suppression claim, the court held that the trial court’s finding of a voluntary, knowing, and intelligent Miranda waiver was not clearly erroneous. The detective read Shoffner his rights word for word from a written waiver form, Shoffner initialed each right and signed the form, and no threats, coercion, or promises were made. Shoffner’s bare appellate assertions — that he lacked “full knowledge” of his rights, feared injury, or was denied counsel — were unsupported by any record citation and therefore insufficient to establish error. On the mistrial claim, the court held the issue was not preserved because Shoffner failed to object contemporaneously when the State elicited his sister’s testimony and instead waited until after she was excused before moving for a mistrial. Even had the motion been timely, his failure to renew it after the trial court gave a curative instruction would independently have forfeited the claim.
On ineffective assistance, the court applied the two-prong Strickland v. Washington, 466 U.S. 668 (1984), standard and rejected each sub-claim. Shoffner’s general complaints about inadequate trial preparation were contradicted by counsel’s testimony that he met with Shoffner more than 25 times, reviewed discovery with him, and discussed the major aspects of the case. Shoffner failed to proffer what additional preparation would have revealed or how it would have changed the outcome. His claim about advice regarding his right to testify also failed because the record showed both counsel and the trial court fully informed him of that right, and Shoffner personally and on the record chose not to testify.
Key Takeaways
- Under Jackson v. Virginia, Georgia appellate courts evaluate sufficiency based on all evidence admitted at trial, not a subset curated by the defendant to exclude contested evidence.
- A Miranda waiver supported by a signed written waiver form and officer testimony is generally sufficient to establish voluntariness; a defendant challenging the waiver must point to specific record evidence of coercion or rights violations, not just make bare assertions.
- A motion for mistrial must be made promptly — at the time the objectionable question is asked or the answer given — and must be renewed after a curative instruction is given; failure to do either forfeits the claim on appeal.
- To prove ineffective assistance based on inadequate trial preparation or failure to interview witnesses, a defendant must proffer specifically what the additional preparation would have uncovered and how it would have benefited the defense.
- Where the record shows counsel explained the pros and cons of testifying, the defendant was informed of the right by the trial court, and the defendant personally elected not to testify, no Strickland deficiency arises from counsel’s advice on that decision.
Why It Matters
This decision reinforces well-established Georgia appellate practice on several procedural and substantive fronts simultaneously. The court’s restatement of the sufficiency standard — that contested evidence is not excluded from the Jackson v. Virginia calculus — forecloses a litigation strategy of bootstrapping suppression arguments into sufficiency claims. The Miranda voluntariness analysis likewise confirms that a signed written waiver form, read aloud with officer testimony of no coercion, will ordinarily survive appellate challenge absent specific, record-grounded countervailing evidence.
The procedural preservation holdings are equally instructive for trial practitioners. Both the untimely mistrial motion and the failure to renew after the curative instruction independently doomed that claim — a reminder that Georgia courts demand contemporaneous objections and follow-through at each procedural juncture. Together, the ineffective-assistance rulings signal that vague complaints about trial preparation, unsupported by concrete proffers of what would have been discovered or how the defense would have changed, will not carry a Strickland claim past the deficiency prong.