Dennis Michael Sheehan was 44 when he was last seen by family in Chicago sometime between the spring and fall of 2015. He is five feet ten inches tall, about 150 pounds, with brown hair and green eyes. After that broad period of last contact, communication ceased and he has not been seen or heard from since.

The Cook County Sheriff’s Police Department is handling the investigation, and efforts to locate him have continued despite no new public leads.

If anyone knew Dennis, where he spent his time in 2015, or has information about his movements between spring and fall of that year, please share what you know with the investigating agency.