Montgomery police say a man killed his step-grandfather. 29 year old Edward Pickett is charged with stabbing to death 70 year old Robert Jolley. Police say it happened around 11:00 Thursday morning on Longbrook Drive. They say there was no evidence of drugs or alcohol at the home and everything seemed to be in order. According to police, Mr. Pickett even made the emergency phone call after the stabbing. Family members and police say Pickett has a mental problem, but they are not elaborating on specifics.