He was deemed unfit to stand trial and was remanded to the Elgin Asylum for the insane. He was reported to have died there eight months later, on February 22, 1916, but the following day's New York Times ran an item titled "Calvin Demarest Not Dead", in which the paper wrote "Dr. Hawley, Deputy Superintendent at the asylum, is at a loss to explain how the report of Demarest's death occurred." Demarest would die on June 12, 1925 at the Elgin Asylum in Elgin, Illinois.