First-Degree Intentional Homicide Defense (Wis. Stat. § 940.01) | Cafferty & Scheidegger

First-Degree Intentional Homicide Is the Top of the Sentencing Ladder

In Wisconsin, first-degree intentional homicide is the most serious crime on the books. It is one of only two charges that carries mandatory life imprisonment (the other is felony murder after a prior homicide). If you or a family member is accused, the single most important decision in the case is which lawyer walks into that first appearance with you.

What the State Must Prove Beyond a Reasonable Doubt

The prosecution must establish three elements:

1. The defendant caused the death of another human being. Causation can be challenged where intervening medical treatment, pre-existing condition, or alternative cause is in the evidence.
2. The defendant acted with intent to kill. Intent is proved almost entirely by inference from conduct, the weapon used, the part of the body targeted, the words spoken, the flight or lack of it afterward.
3. No mitigating circumstances reduced the charge. Wisconsin does not require the State to affirmatively disprove mitigation; the defense raises it. If the jury finds adequate provocation, unnecessary defensive force, or coercion present, the charge drops to second-degree intentional homicide under § 940.05.

Mitigation: The Most Important Lever in a § 940.01 Case

Wisconsin law does not use the common-law “heat of passion” manslaughter theory. Instead, three mitigating circumstances from § 940.01(2) convert a first-degree charge to second-degree:

• Adequate provocation, a reasonable person, under the facts, would have been provoked to the point of losing self-control.
• Unnecessary defensive force, the defendant actually believed force was necessary, even if that belief was objectively unreasonable.
• Prevention of felony, the defendant actually believed the killing was necessary to prevent an imminent felony, even if wrongly.

Raising mitigation moves the case from mandatory life to a Class B felony with a 60-year maximum under § 940.05. The effort to establish one of these circumstances begins in the opening statement and runs through every witness.

Defense Angles Outside Mitigation

• Self-defense under § 939.48, complete defense if the jury finds reasonable belief of imminent death or great bodily harm. The “castle doctrine” presumption in Wisconsin applies inside a home, motor vehicle, or place of business.
• Identity. DNA, fingerprints, video, and eyewitness identifications all deserve independent forensic challenge.
• Confession suppression, Miranda, voluntariness, and Sixth Amendment challenges to statements made during interrogation. Many § 940.01 convictions rest on a contested confession.
• Co-defendant statements, Bruton and hearsay issues when the State intends to use a non-testifying co-defendant’s statement.
• Forensic review, ballistics, wound-track analysis, time-of-death estimates, and blood-spatter reconstruction routinely rest on assumptions that expert defense review can undermine.

Timeline and Procedure

A first-degree intentional homicide case moves through three critical stages:

• Initial appearance and bond hearing. In Racine, Kenosha, and Walworth Counties, cash bond in the six- and seven-figure range is routine. Preparation for the bond argument begins the moment we are retained.
• Preliminary hearing and arraignment. The State must show probable cause at a preliminary hearing. The defense first sees much of the evidence here.
• Trial. Wisconsin first-degree trials are usually the longest criminal trials the circuit sees in a given year. Jury selection alone often runs several days.

Related Homicide Defenses

• Second-degree intentional homicide, the mitigated-charge landing spot.
• First-degree reckless homicide, what people often call “negligent homicide.”
• Homicide by intoxicated use of a vehicle, OWI-related vehicular homicide.
• Homicide practice overview.

If You Are Under Investigation

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