Location Chillicothe Correctional Institution
Offenses Aggravated Arson, Aggravated Murder, Felonious Assault, Murder
Sentence Min/Max 20 YEARS/LIFE
Date Admitted 10/17/1980
Next Eligibility Hearing Date 07/30/2019

On March 27, 1980, defendant Hayes had been drinking with a group of friends at a location in the Over-The-Rhine area of Cincinnati. This drinking occurred during the early evening hours and involved the defendant consuming a few beers. Among those drinking was the defendant's girlfriend, Jill Mapp, a 29 year old mother of two young boys. At about 7:00 p.m. defendant Hayes left with Hill Mapp with the intention of walking her to her apartment located at 31 East 14th Street.

Later that same evening the residents of the apartment building where Jill Mapp lived began to smell smoke in the building. Two of those residents located the source of the fire as being just inside the door to Jill Mapp's apartment. They organized a bucket-brigade and put out the fire before the fire department arrived. The fire proved to have been highly localized, in fact it was confined to an area by a stairwell where two bodies were found. One body was that of Jill Mapp, the other was that of her six year old son Mark Mapp. Both bodies were without life. A second son, Paul David Mapp, was rescued from the upper floors. Initial police investigation revealed that the fire was an obvious arson. The bodies had been wrapped in be sheets and then set afire. Further, there were obvious stab wounds on the body of Jill Mapp.

Hayes admitted to the killing of Jill and Mark Mapp. He indicated that he stabbed Jill Mapp with a butcher knife in an argument, and then temporarily stunned six year old Mark, when the child tried to protect his mother. Hayes then placed the bodies together, wrapped them in bed sheets and set them on fire.

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