Top Stories:  A St. Louis police officer who allegedly killed a fellow officer last week as they took turns firing a revolver containing a single bullet was booked into jail and released yesterday.  Nathaniel Hendren is charged with involuntary manslaughter.  And a man turned himself in and was arrested yesterday for a double shooting that took place Sunday night in mid-Missouri’s Boone County.  34-year-old Michael Stapleton is accused in the shooting in which one person remains in a hospital.