Isaiah Fagan

Isaiah Fagan, 35, died Sept. 13, 2014, of an overdose of opiates, as well as medications prescribed to him by a doctor, his father, Tom Fagan, of Marstons Mills, told the Times in a recent interview.

"Isaiah was wonderful," Fagan said. "He was a great athlete. He gave me many hours of enjoyment watching him play sports. He was sensitive, loving and polite."

And in the end, Fagan said, "He was a sick drug addict who needed help."

But Tom Fagan has turned his grief into action as the founder of the grass-roots group Communities United for a Drug Free Environment.

His group plans to put up 330 purple flags in three Cape Cod towns beginning June 17 to signify the number of people who have died of drug overdoses from 2000 to 2014 on the Cape and Islands.