The Ghost of Cary Grant?
Actor Cary Grant suffered a fatal stroke on the 8th floor of the Blackhawk Hotel in 1986. The star of Arsenic and Old Lace later died at St. Luke's Hospital. Cary has been seen wandering the 8th floor hall of the hotel since his death. The hotel was said to be haunted even prior to Grant's death. A piano sometimes plays of its own accord in the ballroom and a spectral woman in an evening gown is said to wander the halls as well.