HAMPTON -- Eighteen months after their son, Bob, died from an overdose of illegal drugs, Philip and Pauline Strand believe his death could have been prevented by Grinnell police. The Strands say their son would be alive today if police in Grinnell, a city of about 9,200 in central Iowa's Poweshiek County, had removed items from a vehicle they had impounded -- including a drug-laced water bottle. The Strands claim the water bottle was left in the vehicle by two people involved in a Grinnell drug arrest. [continues 765 words]