Mark Derosia Missing Person Case

Sep 17, 2019

Nov 08, 2022

Mark

Derosia

40

32

70 inches

180 lbs

White / Caucasian

Male

In the winter of 2018, a 32-year-old man named Mark Derosia disappeared under puzzling circumstances in Watertown, New York. On the evening of February 18th, he was with a friend who, concerned for his well-being, called a cab to take him to a local hospital. However, the plan changed unexpectedly. Instead of seeking medical attention, Mark instructed the cab driver to take him to the corner of West Main and Court Streets, where he was dropped off. He has not been seen or heard from since that moment, leaving his loved ones and investigators with a perplexing mystery. At the time he went missing, Mark was described as a white male, standing 5 feet 10 inches tall and weighing about 180 pounds, with brown hair and blue eyes. Following his disappearance, the Watertown Police Department launched an investigation, piecing together his last known movements. The cab company's records confirmed the driver's account of the change in destination, a detail that has become a central point of the investigation. This deviation from the original plan to go to the hospital has led to various theories about his intentions that night. One theory that emerged was the possibility that Mark had traveled to Florida; however, inquiries with law enforcement agencies in that state did not produce any leads. The lack of communication and verifiable sightings has deepened the concern for his welfare. The case of Mark Derosia remains an open and active missing person investigation. His sudden and unexplained disappearance has had a profound impact on the Watertown community, with family and friends continuing to hold out hope for answers. Despite the passage of time, the search for Mark continues, with law enforcement encouraging anyone with even the smallest piece of information to come forward. The circumstances surrounding his last known moments, particularly the decision to be dropped off at a different location, are a critical part of an overview of a case that continues to baffle those who knew him and the investigators dedicated to resolving his disappearance.

Feb 18, 2018

Watertown

New York

Jefferson County

13601

No

61298

Watertown Police Department

Watertown

New York

Jefferson County

13601

Gregory Gibbs

Detective

751 Waterman DR, New York

3157862601

Local

Law Enforcement

https://www.watertown-ny.gov/index.asp?nid=123

CA-00622-18

2018-02-22

Watertown Police Department

9433

Brown

Blue

Blue

09/05/2026