State v. Ziolkowski, 351 Conn. 143

Karin Ziolkowski was convicted of murdering her minor son (E) and arson in the second degree after setting two fires in the family home.
The key facts included the defendant's estrangement from her husband, financial difficulties, and social media posts leading up to the offense.
On the day of the offense, the defendant sedated E, set two fires with an accelerant, and was found unconscious with her son in a locked house.
Medical evidence showed E died from homicidal asphyxia, with acute diphenhydramine intoxication as a contributing factor, and not from the fire.
Forensic evidence linked the defendant to the accelerant, and the social media posts were used to show intent and motive.
The trial court admitted several social media posts and found the defendant competent to stand trial after a pretrial competency hearing, but no posttrial hearing was requested or held.

Issue	Ziolkowski's Argument	State's Argument	Held
Impact of Amnesia on Fair Trial	Amnesia deprived her of ability to defend herself or testify, undermining fairness of trial	Claim not preserved; no posttrial hearing requested; record inadequate	Claim fails for lack of adequate record under Golding; no review without posttrial fairness determination
Authentication of Social Media Evidence	Twitter posts not properly authenticated as authored by Ziolkowski	Posts properly authenticated by witness testimony; low threshold met	Trial court did not abuse discretion; authentication standard met; reliability questions go to weight, not admissibility
Sufficiency of Evidence: Murder	State failed to prove identity and intent; alternative explanation of accidental death	Ample circumstantial and forensic evidence established identity and intent	Evidence sufficient to sustain conviction; jury could reasonably infer guilt beyond a reasonable doubt
Sufficiency of Evidence: Second Degree Arson	Evidence not sufficient to prove purpose of concealment or defendant started the fire; argues possible suicide attempt	Evidence showed intentional setting of fire to conceal murder; circumstantial evidence supports jury verdict	Evidence sufficient; intent to damage/destroy and to conceal the homicide was a reasonable jury inference

State v. Golding, 213 Conn. 233 (Conn. 1989) (framework for review of unpreserved constitutional claims)
State v. Gilbert, 229 Conn. 228 (Conn. 1994) (standard for assessing fairness of trial where defendant has amnesia)
State v. Manuel T., 337 Conn. 429 (Conn. 2020) (authentication of electronic and social media evidence)
State v. Daren Y., 350 Conn. 393 (Conn. 2024) (standard for reviewing sufficiency of the evidence)
State v. Patrick M., 344 Conn. 565 (Conn. 2022) (circumstantial evidence of defendant’s identity in crimes)
State v. Otto, 305 Conn. 51 (Conn. 2012) (motive evidence and inference of intent in homicide cases)
State v. Mejia, 233 Conn. 215 (Conn. 1995) (inference of intent from post-offense conduct)
State v. Gary, 273 Conn. 393 (Conn. 2005) (intent may be inferred from natural consequences of defendant’s act)
State v. Valentine, 255 Conn. 61 (Conn. 2000) (prima facie foundation for authentication is a low bar)
State v. Swinton, 268 Conn. 781 (Conn. 2004) (witness with personal knowledge can authenticate evidence)