Deranged (1990)

On a warm spring day in 1928, a kindly, white-haired man appeared at the Budd family home in New York City, and soon persuaded Mr. and Mrs. Budd to let him take their adorable little girl, Grace, on an outing. The Budds never guessed that they had entrusted their child to a monster. After a relentless six-year search and nationwide press coverage, the mystery of Grace Budd's disappearance was solved -- and a crime of unparalleled gore and revulsion was revealed to a stunned American public. What Albert Fish did to Grace Budd, and perhaps fifteen other young children, caused experts to pronounce him the most deranged human being they had ever seen.