People v. Jackson, 37 N.E.3d 883

Charles Jackson was tried by bench for first-degree murder related to the July 27, 2010, shooting of Pierre Champliss; Jackson asserted an insanity defense.
Trial testimony included two State experts (Drs. Coleman and Nadkarni) who said Jackson was sane, and defense expert Dr. Frumkin who said he was not; the trial court found Jackson guilty, but mentally ill.
On direct appeal this court (majority) reversed and remanded for a new trial, concluding the trial judge abandoned neutrality by acting in a prosecutorial manner and relying on matters outside the record; the supreme court denied leave to appeal.
On remand Jackson moved to bar the State from seeking a verdict of guilty of first-degree murder (instead limiting the State to seeking guilty, but mentally ill), invoking double jeopardy, collateral estoppel, and res judicata; the trial court denied the motion.
The State argued double jeopardy does not bar retrial here because reversal was for trial error (not evidentiary insufficiency) and that guilty and guilty, but mentally ill carry no legal distinction for retrial purposes.
The appellate court affirmed the trial court: double jeopardy did not bar retrial because the reversal resulted from trial error; collateral estoppel did not apply because there is a single cause of action and no final adjudication on the merits.

Issue	Plaintiff's Argument	Defendant's Argument	Held
Whether double jeopardy bars the State from seeking a guilty verdict (first-degree murder) on retrial	State: No — reversal was for trial error, not insufficiency; retrial is permitted.	Jackson: Prior verdict of guilty, but mentally ill is distinct and precludes retrial on the greater finding under double jeopardy.	Held: No double jeopardy bar; reversal was for trial error, so retrial allowed.
Whether collateral estoppel prevents relitigation of Jackson’s mental illness on retrial	State: No — only one cause of action here and no final, preclusive adjudication on the merits.	Jackson: Mental-illness finding was decided and should be binding on the State.	Held: Collateral estoppel does not apply; requirement of separate causes and final judgment not met.

People v. Mink, 141 Ill. 2d 163 (1990) (reversal for trial error does not invoke double jeopardy bar to retrial)
People v. Lopez, 229 Ill. 2d 322 (2008) (double jeopardy bars retrial only when reversal is based on evidentiary insufficiency)
People v. Crews, 122 Ill. 2d 266 (1988) (guilty, but mentally ill does not relieve criminal responsibility)
People v. Tenner, 206 Ill. 2d 381 (2002) (elements and requirements of collateral estoppel in criminal context)
People v. Hopkins, 235 Ill. 2d 453 (2009) (collateral estoppel inapplicable where only one cause of action and appellate process not final)
People v. Daniels, 187 Ill. 2d 301 (1999) (standard of review for legal questions is de novo)
People v. Carrillo, 164 Ill. 2d 144 (1995) (collateral estoppel is a component of double jeopardy)