State v. Simmons, 352 Conn. 556

Defendant Robert C. Simmons was convicted of murder, home invasion, and first-degree burglary in the death of 93-year-old Isabella Mehner in Stamford, Connecticut.
The crime occurred in the victim's home, with evidence that the perpetrator entered through an unlocked back door, stole her wedding rings and cash, and killed her with a hammer found near her body.
Surveillance footage placed Simmons at the scene at the relevant time, and forensic evidence (DNA on the victim’s fingernails and defendant’s jeans) further implicated him.
Simmons was previously employed by the victim’s grandson-in-law and admitted knowing the victim but initially lied to police about his presence at her home.
At trial, Simmons argued for a third-party culpability defense due to unidentified male DNA found on the murder weapon, and also claimed prosecutorial improprieties during closing arguments.
The trial court denied the third-party culpability instruction, and the jury convicted Simmons on all but felony murder (vacated on double jeopardy grounds). The conviction and sentence were affirmed on appeal.

Issue	Plaintiff's Argument	Defendant's Argument	Held
Sufficiency of Evidence for Conviction	Simmons was guilty based on video and forensic evidence	Evidence was circumstantial and consistent with an innocent explanation	Evidence was sufficient for conviction
Third-Party Culpability Instruction	Unknown DNA was not directly tied to the crime	Unknown male DNA on hammer justified instruction for third-party culpability	Denial of instruction was not abuse of discretion
Prosecutorial Impropriety in Closing Arguments	Remarks were fair comment and based on evidence	Comments mischaracterized evidence and attacked defense as deceptive	Prosecutor's comments not improper, no unfair trial
Admission of Forensic Evidence Without Test Instruction	Forensic evidence supports guilt, matches procedural precedent	Omitted confirmatory testing, thus evidence less conclusive	Forensic evidence was admissible and sufficiently reliable

State v. Patrick M., 344 Conn. 565 (2022) (standard for sufficiency of the evidence and jury inferences).
State v. Ashby, 336 Conn. 452 (2020) (when third-party culpability instruction is required based on forensic evidence).
State v. Honsch, 349 Conn. 783 (2024) (sufficiency of physical and consciousness of guilt evidence).
State v. Abraham, 343 Conn. 470 (2022) (identity established through forensic evidence and circumstantial context).
State v. Otto, 305 Conn. 51 (2012) (jury may draw reasonable inferences from evidence).
State v. Schovanec, 326 Conn. 310 (2017) (direct connection needed for third-party culpability instruction).
State v. Arroyo, 284 Conn. 597 (2007) (requirements for third-party culpability evidence in jury instructions).
State v. Cerreta, 260 Conn. 251 (2002) (physical evidence at crime scene can create direct connection to third party).