It was supposed to be a regular, peaceful Saturday afternoon out on the water. Magdalena Jablonska and her husband were cruising down the Fox River, enjoying the fresh air and warm weather. They were taking it easy in a quiet, designated no-wake zone just south of the McHenry Dam. Nothing about the day hinted at the violent tragedy that was about to unfold in an instant.
Without warning, a massive triple-engine pontoon boat came roaring into the calm stretch of water. It was moving at full throttle, tearing through the quiet zone at nearly 80 miles per hour. The sheer speed of the oncoming vessel left no time for anyone to react or steer out of the way. Within seconds, the powerful pontoon slammed directly into the couple’s boat near Riverside Drive.

The impact was sudden and devastating. Magdalena, a 48-year-old resident of Des Plaines, Illinois, was sitting in the passenger seat when the collision happened. The force of the crash hit her side directly. Authorities later confirmed that she suffered severe blunt force injuries to her head and body, dying instantly right there on the water.
Her husband, who was driving their boat at the time, survived the terrible crash. However, he sustained serious injuries that required urgent medical care. In a split second, what started as a relaxing weekend outing turned into a horrifying nightmare for the couple, leaving a husband injured and grieving the sudden loss of his wife.
The man operating the high-speed pontoon boat was identified as 45-year-old Richard Stevenson of Lisle. Investigators found that Stevenson was severely intoxicated behind the wheel. Toxicology tests conducted after the crash revealed his blood alcohol level was 0.236, which is nearly three times the legal limit in Illinois. Witnesses and passengers on his boat even reported that he was stumbling on the dock before they ever left shore.
Stevenson remained at the scene following the crash and was later taken into custody. Prosecutors charged him with reckless homicide and aggravated driving under the influence. Given the gravity of the situation and the danger posed to the public, a judge ordered Stevenson to be held in jail without bail while he awaits his next court hearing on August 5.
Back in Des Plaines, Magdalena’s family, friends, and neighbors are left picking up the pieces of a senseless loss. The Illinois Conservation Police are actively investigating the incident and asking anyone with video footage, photos, or eyewitness accounts to come forward. For those who knew Magdalena, the painful reality of her sudden absence leaves a deep scar that justice alone can never fully heal.
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