EVANSTON, Wyo. — A tragic confrontation unfolded in a family home, leading to the fatal shooting of a father and raising significant legal questions surrounding self-defense. Prosecutors have charged 23-year-old Ethan Grasse with second-degree murder in the death of his father, Michael Grasse, who was 49 at the time of the incident.
The confrontation on the evening of Nov. 21, 2025, took place after a long day of drinking, during which Ethan attempted to prevent his father from driving under the influence. According to court records, Ethan drove his father for food after the older man had consumed a substantial amount of alcohol. Things escalated when Ethan parked behind his father’s vehicle upon their return home, only to hear noises that led him to believe his father was planning to drive again.
A tense argument ensued, resulting in Ethan’s grandmother having to intervene. Following the dispute, Ethan left the house, seeking refuge elsewhere. After a visit to Walmart for a new locking doorknob, he returned home to find Michael passed out on the couch. Ethan then took his father’s car keys and phone, poured out his whiskey, and secured himself in his bedroom for the night.
By around 10 p.m., Michael awakened and approached Ethan’s locked door, allegedly threatening to kick it down if his belongings were not returned. In response, Ethan texted his grandmother around 10:44 p.m., expressing his fears about the situation and indicating that he would defend himself if he felt threatened.
The shooting occurred in the early morning hours of Nov. 22 when Ethan was awakened by what he believed to be his father attempting to break into his room. Without his glasses, he reportedly saw only a shadowy figure and fired three shots through the door using a .22-caliber handgun. It was only after firing that he realized the identity of the person entering his room, and he called 911, but it was too late for Michael, who was pronounced dead shortly thereafter.
The circumstances around this incident have drawn significant attention, not only because of its tragic outcome but also due to the nature of the events leading up to it. Unlike typical cases of self-defense, which often involve strangers or street confrontations, this shooting arose from a private family dispute. Ethan expressed his remorse in a written statement, emphasizing that he never intended to kill anyone but felt he acted in self-defense against an unknown assailant.
The case has seen various legal developments, including a recent motion by Ethan’s defense team to dismiss the charges based on self-defense. However, the local judge ruled against this motion, indicating that the defense did not provide sufficient grounds to dismiss the case at that stage. This ruling keeps the murder charge intact while still allowing the self-defense argument to be presented during the upcoming trial.
As the trial date approaches, both the prosecution and defense are preparing to present their cases, which will explore essential questions about the nature of the confrontation, including whether Michael Grasse was still posing a threat and whether Ethan’s actions were reasonable under Wyoming’s self-defense laws. The community is left to grapple with the implications of this familial tragedy, which is set to unfold in the courtroom on May 12.