Second-Degree Intentional Homicide (§ 940.05)

Second-Degree Intentional Homicide Is a First-Degree Charge With Mitigation

Wisconsin law treats second-degree intentional homicide as the mitigated version of first-degree. The defendant intentionally caused the death, but a mitigating circumstance, adequate provocation, unnecessary defensive force, or prevention of felony, reduces the charge. A successful mitigation argument on a § 940.01 case lands the conviction at § 940.05.

What the State Must Prove

• The defendant caused the death of another human being.
• The defendant acted with intent to kill, the same intent element as first-degree.
• Either the prosecution admits mitigation applies, or the jury finds it does after the defense raises it.

The prosecution files a § 940.05 charge when the facts show intentional killing but the provocation or defensive-force evidence is strong enough that a first-degree jury verdict is unlikely. The defense files for § 940.05 when the charging is § 940.01.

The Three Statutory Mitigators

These are defined at § 940.01(2) and imported into § 940.05 by reference:

• Adequate provocation, a provocation that would cause a reasonable person to lose self-control. Words alone are rarely enough; a physical attack or discovery of a serious betrayal may be.
• Unnecessary defensive force, the defendant actually and subjectively believed deadly force was necessary, even though a reasonable person would have disagreed. This is imperfect self-defense.
• Prevention of a felony, the defendant actually believed killing was necessary to prevent imminent commission of a felony.

The State bears the burden to disprove mitigation beyond a reasonable doubt once the defense raises it with credible evidence. That burden-shift is the hidden leverage in these cases.

Why § 940.05 Cases Are Often Winnable Beyond Mitigation

A case charged at second-degree signals the prosecution already knows its first-degree proof is weak. That weakness can often be pressed harder:

• Imperfect self-defense can upgrade to perfect self-defense under § 939.48 if the defendant’s belief was objectively reasonable. Perfect self-defense is a complete acquittal.
• Causation challenges, intervening medical treatment, co-defendant acts, or pre-existing conditions can break the causal chain.
• Intent challenges, if the jury cannot find intent to kill beyond a reasonable doubt, the charge drops to a reckless homicide theory.
• Reckless-homicide reduction, if intent is unproven but recklessness is, the conviction comes in at first-degree reckless under § 940.02, which carries a lower maximum.

Sentencing Reality in § 940.05 Cases

Because § 940.05 is a Class B felony, the 60-year statutory maximum is divided into confinement and extended supervision. Judges in Racine, Kenosha, and Walworth Counties commonly impose sentences in the 20-to-40-year range, with the final apportionment heavily influenced by:

• Strength of mitigation at trial.
• Defendant’s criminal history.
• Victim impact statements and the prosecutor’s recommendation.
• Read-ins of related but uncharged conduct.

We brief mitigation aggressively at sentencing, witnesses, records, mental-health evaluations, and a written memorandum, because the range of outcomes under the same statute is extremely wide.

Related Homicide Defenses

• First-degree intentional homicide, the parent charge.
• First-degree reckless homicide, lower-mens-rea alternative.
• Homicide by intoxicated use of a vehicle, OWI-related vehicular homicide.
• Homicide practice overview.

Get a Lawyer Into the Case Early

Second-degree intentional homicide cases are won with preparation that begins before the preliminary hearing. Call or text Cafferty & Scheidegger at (262) 632-5000. Consultations are free, confidential, and available 24 hours a day.