Kansas police encountered a grisly scene after responding to a frantic 911 call from a mother being attacked by her son, police records have revealed. Robert Fapp, 38, of Topeka, Kansas, stabbed his father 57 times before attempting to turn the knife on his mother, Katherine Fapp, who rushed to call 911 to explain to the dispatcher that her son was repeatedly stabbing his father, according to an affidavit obtained by KSNT. The affidavit also revealed that when police arrived on the scene on April 19, they found Katherine Fapp bleeding profusely on her front porch. Upon entering the home, they …