Darin Thrailkill Sentenced for Strangle Death ☠️ of His GF's 6YR Old Son • SENTENCES

GRAND JUNCTION, Colo. — Nearly ten years after the death of six-year-old Martin Osinski, a Mesa County jury on Monday found 40-year-old Darin Thrailkill guilty of first-degree murder. The verdict concludes a long, complex investigation into a case prosecutors described as one of the most difficult of their careers.

Martin was brought to St. Mary’s Medical Center in July 2016 already cold to the touch and showing no signs of life. Doctors quickly noted suspicious bruising, marks around his neck, and severe petechiae—burst capillaries visible around his eyes and ears. An autopsy later ruled the cause of death as homicide by asphyxia consistent with strangulation.

Five people, including Martin’s mother, Krystal Osinski, and Thrailkill—her then-partner—were inside the home that night. Witnesses reported hearing screams before Martin was discovered unresponsive. Police also found children’s underwear with apparent fecal matter, something prosecutors said routinely triggered Thrailkill’s anger.

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